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Finding the Fourth Proportional to 85,841.16, 128,737.12 and 29,666.56

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Solution

The fourth proportional to 85,841.16, 128,737.12 and 29,666.56 is: 44,491.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,841.16 : 128,737.12 = 29,666.56 : x
  2. Step 2: Convert to fraction form
    85,841.16/128,737.12 = 29,666.56/x
  3. Step 3: Cross multiply
    85,841.16x = 128,737.12 × 29,666.56
  4. Step 4: Simplify right side
    85,841.16x = 3,819,187,494.71
  5. Step 5: Solve for x
    x = 3,819,187,494.71/85,841.16
  6. Step 6: Final answer
    x = 44,491.33

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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.