Home / 42,712.61-64,068.92-11,547.86

Finding the Fourth Proportional to 42,712.61, 64,068.92 and 11,547.86

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Solution

The fourth proportional to 42,712.61, 64,068.92 and 11,547.86 is: 17,321.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,712.61 : 64,068.92 = 11,547.86 : x
  2. Step 2: Convert to fraction form
    42,712.61/64,068.92 = 11,547.86/x
  3. Step 3: Cross multiply
    42,712.61x = 64,068.92 × 11,547.86
  4. Step 4: Simplify right side
    42,712.61x = 739,858,540.43
  5. Step 5: Solve for x
    x = 739,858,540.43/42,712.61
  6. Step 6: Final answer
    x = 17,321.78

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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.