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Finding the Fourth Proportional to 60,461.64, 90,692.43 and 21,018.74

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Solution

The fourth proportional to 60,461.64, 90,692.43 and 21,018.74 is: 31,528.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,461.64 : 90,692.43 = 21,018.74 : x
  2. Step 2: Convert to fraction form
    60,461.64/90,692.43 = 21,018.74/x
  3. Step 3: Cross multiply
    60,461.64x = 90,692.43 × 21,018.74
  4. Step 4: Simplify right side
    60,461.64x = 1,906,240,047.58
  5. Step 5: Solve for x
    x = 1,906,240,047.58/60,461.64
  6. Step 6: Final answer
    x = 31,528.09

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1.5x scale

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.