Home / 81,488.28-112,459.20-45,680.64

Finding the Fourth Proportional to 81,488.28, 112,459.20 and 45,680.64

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Solution

The fourth proportional to 81,488.28, 112,459.20 and 45,680.64 is: 63,042.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,488.28 : 112,459.20 = 45,680.64 : x
  2. Step 2: Convert to fraction form
    81,488.28/112,459.20 = 45,680.64/x
  3. Step 3: Cross multiply
    81,488.28x = 112,459.20 × 45,680.64
  4. Step 4: Simplify right side
    81,488.28x = 5,137,208,229.89
  5. Step 5: Solve for x
    x = 5,137,208,229.89/81,488.28
  6. Step 6: Final answer
    x = 63,042.30

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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.