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Finding the Fourth Proportional to 70,064.62, 96,688.65 and 39,849.91

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Solution

The fourth proportional to 70,064.62, 96,688.65 and 39,849.91 is: 54,992.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,064.62 : 96,688.65 = 39,849.91 : x
  2. Step 2: Convert to fraction form
    70,064.62/96,688.65 = 39,849.91/x
  3. Step 3: Cross multiply
    70,064.62x = 96,688.65 × 39,849.91
  4. Step 4: Simplify right side
    70,064.62x = 3,853,034,000.52
  5. Step 5: Solve for x
    x = 3,853,034,000.52/70,064.62
  6. Step 6: Final answer
    x = 54,992.58

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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.