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Finding the Fourth Proportional to 42,713.20, 64,063.20 and 14,626.80

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Solution

The fourth proportional to 42,713.20, 64,063.20 and 14,626.80 is: 21,937.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,713.20 : 64,063.20 = 14,626.80 : x
  2. Step 2: Convert to fraction form
    42,713.20/64,063.20 = 14,626.80/x
  3. Step 3: Cross multiply
    42,713.20x = 64,063.20 × 14,626.80
  4. Step 4: Simplify right side
    42,713.20x = 937,039,613.76
  5. Step 5: Solve for x
    x = 937,039,613.76/42,713.20
  6. Step 6: Final answer
    x = 21,937.94

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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.