Home / 81,427.20-112,380.57-47,446.32

Finding the Fourth Proportional to 81,427.20, 112,380.57 and 47,446.32

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Solution

The fourth proportional to 81,427.20, 112,380.57 and 47,446.32 is: 65,482.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,427.20 : 112,380.57 = 47,446.32 : x
  2. Step 2: Convert to fraction form
    81,427.20/112,380.57 = 47,446.32/x
  3. Step 3: Cross multiply
    81,427.20x = 112,380.57 × 47,446.32
  4. Step 4: Simplify right side
    81,427.20x = 5,332,044,486.00
  5. Step 5: Solve for x
    x = 5,332,044,486.00/81,427.20
  6. Step 6: Final answer
    x = 65,482.35

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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.