Home / 81,006.28-121,510.38-28,417.24

Finding the Fourth Proportional to 81,006.28, 121,510.38 and 28,417.24

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Solution

The fourth proportional to 81,006.28, 121,510.38 and 28,417.24 is: 42,626.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,006.28 : 121,510.38 = 28,417.24 : x
  2. Step 2: Convert to fraction form
    81,006.28/121,510.38 = 28,417.24/x
  3. Step 3: Cross multiply
    81,006.28x = 121,510.38 × 28,417.24
  4. Step 4: Simplify right side
    81,006.28x = 3,452,989,630.95
  5. Step 5: Solve for x
    x = 3,452,989,630.95/81,006.28
  6. Step 6: Final answer
    x = 42,626.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.