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Finding the Fourth Proportional to 65,780.46, 98,695.55 and 39,503.52

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Solution

The fourth proportional to 65,780.46, 98,695.55 and 39,503.52 is: 59,270.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,780.46 : 98,695.55 = 39,503.52 : x
  2. Step 2: Convert to fraction form
    65,780.46/98,695.55 = 39,503.52/x
  3. Step 3: Cross multiply
    65,780.46x = 98,695.55 × 39,503.52
  4. Step 4: Simplify right side
    65,780.46x = 3,898,821,633.34
  5. Step 5: Solve for x
    x = 3,898,821,633.34/65,780.46
  6. Step 6: Final answer
    x = 59,270.21

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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.