Home / 82,401.20-113,613.36-69,631.28

Finding the Fourth Proportional to 82,401.20, 113,613.36 and 69,631.28

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Solution

The fourth proportional to 82,401.20, 113,613.36 and 69,631.28 is: 96,006.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,401.20 : 113,613.36 = 69,631.28 : x
  2. Step 2: Convert to fraction form
    82,401.20/113,613.36 = 69,631.28/x
  3. Step 3: Cross multiply
    82,401.20x = 113,613.36 × 69,631.28
  4. Step 4: Simplify right side
    82,401.20x = 7,911,043,681.90
  5. Step 5: Solve for x
    x = 7,911,043,681.90/82,401.20
  6. Step 6: Final answer
    x = 96,006.41

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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.