Home / 72,929.91-100,642.68-40,664.15

Finding the Fourth Proportional to 72,929.91, 100,642.68 and 40,664.15

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Solution

The fourth proportional to 72,929.91, 100,642.68 and 40,664.15 is: 56,116.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,929.91 : 100,642.68 = 40,664.15 : x
  2. Step 2: Convert to fraction form
    72,929.91/100,642.68 = 40,664.15/x
  3. Step 3: Cross multiply
    72,929.91x = 100,642.68 × 40,664.15
  4. Step 4: Simplify right side
    72,929.91x = 4,092,548,532.71
  5. Step 5: Solve for x
    x = 4,092,548,532.71/72,929.91
  6. Step 6: Final answer
    x = 56,116.19

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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.