Home / 85,417,173,931.40-128,163,981,492.30-38,864,488,977.80

Finding the Fourth Proportional to 85,417,173,931.40, 128,163,981,492.30 and 38,864,488,977.80

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Solution

The fourth proportional to 85,417,173,931.40, 128,163,981,492.30 and 38,864,488,977.80 is: 58,314,123,692.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,417,173,931.40 : 128,163,981,492.30 = 38,864,488,977.80 : x
  2. Step 2: Convert to fraction form
    85,417,173,931.40/128,163,981,492.30 = 38,864,488,977.80/x
  3. Step 3: Cross multiply
    85,417,173,931.40x = 128,163,981,492.30 × 38,864,488,977.80
  4. Step 4: Simplify right side
    85,417,173,931.40x = 4,981,027,646,058,457,464,832
  5. Step 5: Solve for x
    x = 4,981,027,646,058,457,464,832/85,417,173,931.40
  6. Step 6: Final answer
    x = 58,314,123,692.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.