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Finding the Fourth Proportional to 64,345.92, 96,386.04 and 47,724.72

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Solution

The fourth proportional to 64,345.92, 96,386.04 and 47,724.72 is: 71,488.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,345.92 : 96,386.04 = 47,724.72 : x
  2. Step 2: Convert to fraction form
    64,345.92/96,386.04 = 47,724.72/x
  3. Step 3: Cross multiply
    64,345.92x = 96,386.04 × 47,724.72
  4. Step 4: Simplify right side
    64,345.92x = 4,599,996,770.91
  5. Step 5: Solve for x
    x = 4,599,996,770.91/64,345.92
  6. Step 6: Final answer
    x = 71,488.55

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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.