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Finding the Fourth Proportional to 78,502.48, 108,277.72 and 48,248.08

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Solution

The fourth proportional to 78,502.48, 108,277.72 and 48,248.08 is: 66,548.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,502.48 : 108,277.72 = 48,248.08 : x
  2. Step 2: Convert to fraction form
    78,502.48/108,277.72 = 48,248.08/x
  3. Step 3: Cross multiply
    78,502.48x = 108,277.72 × 48,248.08
  4. Step 4: Simplify right side
    78,502.48x = 5,224,192,096.78
  5. Step 5: Solve for x
    x = 5,224,192,096.78/78,502.48
  6. Step 6: Final answer
    x = 66,548.12

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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.