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Finding the Fourth Proportional to 74,309.59, 102,547.24 and 42,479.17

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Solution

The fourth proportional to 74,309.59, 102,547.24 and 42,479.17 is: 58,621.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,309.59 : 102,547.24 = 42,479.17 : x
  2. Step 2: Convert to fraction form
    74,309.59/102,547.24 = 42,479.17/x
  3. Step 3: Cross multiply
    74,309.59x = 102,547.24 × 42,479.17
  4. Step 4: Simplify right side
    74,309.59x = 4,356,121,830.52
  5. Step 5: Solve for x
    x = 4,356,121,830.52/74,309.59
  6. Step 6: Final answer
    x = 58,621.26

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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.