Home / 85,564,995.84-128,359,692.48-28,061,767.68

Finding the Fourth Proportional to 85,564,995.84, 128,359,692.48 and 28,061,767.68

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Solution

The fourth proportional to 85,564,995.84, 128,359,692.48 and 28,061,767.68 is: 42,096,652.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,564,995.84 : 128,359,692.48 = 28,061,767.68 : x
  2. Step 2: Convert to fraction form
    85,564,995.84/128,359,692.48 = 28,061,767.68/x
  3. Step 3: Cross multiply
    85,564,995.84x = 128,359,692.48 × 28,061,767.68
  4. Step 4: Simplify right side
    85,564,995.84x = 3,601,999,869,850,003
  5. Step 5: Solve for x
    x = 3,601,999,869,850,003/85,564,995.84
  6. Step 6: Final answer
    x = 42,096,652.19

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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.