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Finding the Fourth Proportional to 60,713.80, 91,070.70 and 42,999.10

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Solution

The fourth proportional to 60,713.80, 91,070.70 and 42,999.10 is: 64,498.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,713.80 : 91,070.70 = 42,999.10 : x
  2. Step 2: Convert to fraction form
    60,713.80/91,070.70 = 42,999.10/x
  3. Step 3: Cross multiply
    60,713.80x = 91,070.70 × 42,999.10
  4. Step 4: Simplify right side
    60,713.80x = 3,915,958,136.37
  5. Step 5: Solve for x
    x = 3,915,958,136.37/60,713.80
  6. Step 6: Final answer
    x = 64,498.65

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Similar ratio
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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.