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Finding the Fourth Proportional to 72,547.88, 100,151.52 and 56,377.04

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Solution

The fourth proportional to 72,547.88, 100,151.52 and 56,377.04 is: 77,827.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,547.88 : 100,151.52 = 56,377.04 : x
  2. Step 2: Convert to fraction form
    72,547.88/100,151.52 = 56,377.04/x
  3. Step 3: Cross multiply
    72,547.88x = 100,151.52 × 56,377.04
  4. Step 4: Simplify right side
    72,547.88x = 5,646,246,249.10
  5. Step 5: Solve for x
    x = 5,646,246,249.10/72,547.88
  6. Step 6: Final answer
    x = 77,827.86

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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.