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Finding the Fourth Proportional to 65,999.70, 98,999.55 and 65,124.90

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Solution

The fourth proportional to 65,999.70, 98,999.55 and 65,124.90 is: 97,687.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,999.70 : 98,999.55 = 65,124.90 : x
  2. Step 2: Convert to fraction form
    65,999.70/98,999.55 = 65,124.90/x
  3. Step 3: Cross multiply
    65,999.70x = 98,999.55 × 65,124.90
  4. Step 4: Simplify right side
    65,999.70x = 6,447,335,793.80
  5. Step 5: Solve for x
    x = 6,447,335,793.80/65,999.70
  6. Step 6: Final answer
    x = 97,687.35

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1.5x scale

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.