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Finding the Fourth Proportional to 81,614.58, 112,639.11 and 45,806.55

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Solution

The fourth proportional to 81,614.58, 112,639.11 and 45,806.55 is: 63,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,614.58 : 112,639.11 = 45,806.55 : x
  2. Step 2: Convert to fraction form
    81,614.58/112,639.11 = 45,806.55/x
  3. Step 3: Cross multiply
    81,614.58x = 112,639.11 × 45,806.55
  4. Step 4: Simplify right side
    81,614.58x = 5,159,608,430.00
  5. Step 5: Solve for x
    x = 5,159,608,430.00/81,614.58
  6. Step 6: Final answer
    x = 63,219.20

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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.