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Finding the Fourth Proportional to 71,445.24, 107,166.24 and 18,858.42

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Solution

The fourth proportional to 71,445.24, 107,166.24 and 18,858.42 is: 28,287.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,445.24 : 107,166.24 = 18,858.42 : x
  2. Step 2: Convert to fraction form
    71,445.24/107,166.24 = 18,858.42/x
  3. Step 3: Cross multiply
    71,445.24x = 107,166.24 × 18,858.42
  4. Step 4: Simplify right side
    71,445.24x = 2,020,985,963.74
  5. Step 5: Solve for x
    x = 2,020,985,963.74/71,445.24
  6. Step 6: Final answer
    x = 28,287.20

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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.