Home / 90,008.17-124,215.90-49,721.60

Finding the Fourth Proportional to 90,008.17, 124,215.90 and 49,721.60

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Solution

The fourth proportional to 90,008.17, 124,215.90 and 49,721.60 is: 68,618.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,008.17 : 124,215.90 = 49,721.60 : x
  2. Step 2: Convert to fraction form
    90,008.17/124,215.90 = 49,721.60/x
  3. Step 3: Cross multiply
    90,008.17x = 124,215.90 × 49,721.60
  4. Step 4: Simplify right side
    90,008.17x = 6,176,213,417.52
  5. Step 5: Solve for x
    x = 6,176,213,417.52/90,008.17
  6. Step 6: Final answer
    x = 68,618.37

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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.