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Finding the Fourth Proportional to 85,937.97, 128,957.99 and 46,494.21

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Solution

The fourth proportional to 85,937.97, 128,957.99 and 46,494.21 is: 69,768.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,937.97 : 128,957.99 = 46,494.21 : x
  2. Step 2: Convert to fraction form
    85,937.97/128,957.99 = 46,494.21/x
  3. Step 3: Cross multiply
    85,937.97x = 128,957.99 × 46,494.21
  4. Step 4: Simplify right side
    85,937.97x = 5,995,799,635.77
  5. Step 5: Solve for x
    x = 5,995,799,635.77/85,937.97
  6. Step 6: Final answer
    x = 69,768.92

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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.