Home / 81,440.32-112,394.88-45,630.12

Finding the Fourth Proportional to 81,440.32, 112,394.88 and 45,630.12

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Solution

The fourth proportional to 81,440.32, 112,394.88 and 45,630.12 is: 62,973.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,440.32 : 112,394.88 = 45,630.12 : x
  2. Step 2: Convert to fraction form
    81,440.32/112,394.88 = 45,630.12/x
  3. Step 3: Cross multiply
    81,440.32x = 112,394.88 × 45,630.12
  4. Step 4: Simplify right side
    81,440.32x = 5,128,591,861.79
  5. Step 5: Solve for x
    x = 5,128,591,861.79/81,440.32
  6. Step 6: Final answer
    x = 62,973.62

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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.