Home / 81,446.40-112,397.49-45,636.30

Finding the Fourth Proportional to 81,446.40, 112,397.49 and 45,636.30

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Solution

The fourth proportional to 81,446.40, 112,397.49 and 45,636.30 is: 62,978.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,446.40 : 112,397.49 = 45,636.30 : x
  2. Step 2: Convert to fraction form
    81,446.40/112,397.49 = 45,636.30/x
  3. Step 3: Cross multiply
    81,446.40x = 112,397.49 × 45,636.30
  4. Step 4: Simplify right side
    81,446.40x = 5,129,405,572.89
  5. Step 5: Solve for x
    x = 5,129,405,572.89/81,446.40
  6. Step 6: Final answer
    x = 62,978.91

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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.