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Finding the Fourth Proportional to 70,784.80, 97,680.54 and 38,952.88

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Solution

The fourth proportional to 70,784.80, 97,680.54 and 38,952.88 is: 53,753.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,784.80 : 97,680.54 = 38,952.88 : x
  2. Step 2: Convert to fraction form
    70,784.80/97,680.54 = 38,952.88/x
  3. Step 3: Cross multiply
    70,784.80x = 97,680.54 × 38,952.88
  4. Step 4: Simplify right side
    70,784.80x = 3,804,938,352.96
  5. Step 5: Solve for x
    x = 3,804,938,352.96/70,784.80
  6. Step 6: Final answer
    x = 53,753.61

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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.