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Finding the Fourth Proportional to 69,743.72, 96,248.88 and 38,699.80

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Solution

The fourth proportional to 69,743.72, 96,248.88 and 38,699.80 is: 53,407.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,743.72 : 96,248.88 = 38,699.80 : x
  2. Step 2: Convert to fraction form
    69,743.72/96,248.88 = 38,699.80/x
  3. Step 3: Cross multiply
    69,743.72x = 96,248.88 × 38,699.80
  4. Step 4: Simplify right side
    69,743.72x = 3,724,812,406.22
  5. Step 5: Solve for x
    x = 3,724,812,406.22/69,743.72
  6. Step 6: Final answer
    x = 53,407.14

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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.