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Finding the Fourth Proportional to 67,999.70, 101,899.95 and 60,979.70

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Solution

The fourth proportional to 67,999.70, 101,899.95 and 60,979.70 is: 91,380.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,999.70 : 101,899.95 = 60,979.70 : x
  2. Step 2: Convert to fraction form
    67,999.70/101,899.95 = 60,979.70/x
  3. Step 3: Cross multiply
    67,999.70x = 101,899.95 × 60,979.70
  4. Step 4: Simplify right side
    67,999.70x = 6,213,828,381.02
  5. Step 5: Solve for x
    x = 6,213,828,381.02/67,999.70
  6. Step 6: Final answer
    x = 91,380.23

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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.