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Finding the Fourth Proportional to 71,494.18, 107,242.10 and 21,574.71

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Solution

The fourth proportional to 71,494.18, 107,242.10 and 21,574.71 is: 32,362.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,494.18 : 107,242.10 = 21,574.71 : x
  2. Step 2: Convert to fraction form
    71,494.18/107,242.10 = 21,574.71/x
  3. Step 3: Cross multiply
    71,494.18x = 107,242.10 × 21,574.71
  4. Step 4: Simplify right side
    71,494.18x = 2,313,717,180.32
  5. Step 5: Solve for x
    x = 2,313,717,180.32/71,494.18
  6. Step 6: Final answer
    x = 32,362.31

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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.