Home / 90,008.02-124,212.11-49,720.95

Finding the Fourth Proportional to 90,008.02, 124,212.11 and 49,720.95

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Solution

The fourth proportional to 90,008.02, 124,212.11 and 49,720.95 is: 68,615.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,008.02 : 124,212.11 = 49,720.95 : x
  2. Step 2: Convert to fraction form
    90,008.02/124,212.11 = 49,720.95/x
  3. Step 3: Cross multiply
    90,008.02x = 124,212.11 × 49,720.95
  4. Step 4: Simplify right side
    90,008.02x = 6,175,944,110.70
  5. Step 5: Solve for x
    x = 6,175,944,110.70/90,008.02
  6. Step 6: Final answer
    x = 68,615.49

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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.