Home / 72,445.31-100,023.07-45,262.78

Finding the Fourth Proportional to 72,445.31, 100,023.07 and 45,262.78

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Solution

The fourth proportional to 72,445.31, 100,023.07 and 45,262.78 is: 62,492.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,445.31 : 100,023.07 = 45,262.78 : x
  2. Step 2: Convert to fraction form
    72,445.31/100,023.07 = 45,262.78/x
  3. Step 3: Cross multiply
    72,445.31x = 100,023.07 × 45,262.78
  4. Step 4: Simplify right side
    72,445.31x = 4,527,321,849.12
  5. Step 5: Solve for x
    x = 4,527,321,849.12/72,445.31
  6. Step 6: Final answer
    x = 62,492.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.