Home / 86,720.31-119,644.11-52,718.13

Finding the Fourth Proportional to 86,720.31, 119,644.11 and 52,718.13

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Solution

The fourth proportional to 86,720.31, 119,644.11 and 52,718.13 is: 72,732.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,720.31 : 119,644.11 = 52,718.13 : x
  2. Step 2: Convert to fraction form
    86,720.31/119,644.11 = 52,718.13/x
  3. Step 3: Cross multiply
    86,720.31x = 119,644.11 × 52,718.13
  4. Step 4: Simplify right side
    86,720.31x = 6,307,413,744.71
  5. Step 5: Solve for x
    x = 6,307,413,744.71/86,720.31
  6. Step 6: Final answer
    x = 72,732.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.