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Finding the Fourth Proportional to 67,999.70, 101,999.55 and 67,538.90

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Solution

The fourth proportional to 67,999.70, 101,999.55 and 67,538.90 is: 101,308.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,999.70 : 101,999.55 = 67,538.90 : x
  2. Step 2: Convert to fraction form
    67,999.70/101,999.55 = 67,538.90/x
  3. Step 3: Cross multiply
    67,999.70x = 101,999.55 × 67,538.90
  4. Step 4: Simplify right side
    67,999.70x = 6,888,937,407.50
  5. Step 5: Solve for x
    x = 6,888,937,407.50/67,999.70
  6. Step 6: Final answer
    x = 101,308.35

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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.