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Finding the Fourth Proportional to 72,452.40, 108,666.28 and 19,144.96

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Solution

The fourth proportional to 72,452.40, 108,666.28 and 19,144.96 is: 28,714.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,452.40 : 108,666.28 = 19,144.96 : x
  2. Step 2: Convert to fraction form
    72,452.40/108,666.28 = 19,144.96/x
  3. Step 3: Cross multiply
    72,452.40x = 108,666.28 × 19,144.96
  4. Step 4: Simplify right side
    72,452.40x = 2,080,411,583.95
  5. Step 5: Solve for x
    x = 2,080,411,583.95/72,452.40
  6. Step 6: Final answer
    x = 28,714.18

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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.