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Finding the Fourth Proportional to 71,700.26, 107,550.35 and 21,780.16

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Solution

The fourth proportional to 71,700.26, 107,550.35 and 21,780.16 is: 32,670.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,700.26 : 107,550.35 = 21,780.16 : x
  2. Step 2: Convert to fraction form
    71,700.26/107,550.35 = 21,780.16/x
  3. Step 3: Cross multiply
    71,700.26x = 107,550.35 × 21,780.16
  4. Step 4: Simplify right side
    71,700.26x = 2,342,463,534.95
  5. Step 5: Solve for x
    x = 2,342,463,534.95/71,700.26
  6. Step 6: Final answer
    x = 32,670.23

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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.