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Finding the Fourth Proportional to 85,493.55, 128,242.93 and 29,332.87

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Solution

The fourth proportional to 85,493.55, 128,242.93 and 29,332.87 is: 44,000.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,493.55 : 128,242.93 = 29,332.87 : x
  2. Step 2: Convert to fraction form
    85,493.55/128,242.93 = 29,332.87/x
  3. Step 3: Cross multiply
    85,493.55x = 128,242.93 × 29,332.87
  4. Step 4: Simplify right side
    85,493.55x = 3,761,732,855.17
  5. Step 5: Solve for x
    x = 3,761,732,855.17/85,493.55
  6. Step 6: Final answer
    x = 44,000.19

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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.