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Finding the Fourth Proportional to 90,175.71, 124,443.03 and 49,890.14

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Solution

The fourth proportional to 90,175.71, 124,443.03 and 49,890.14 is: 68,848.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,175.71 : 124,443.03 = 49,890.14 : x
  2. Step 2: Convert to fraction form
    90,175.71/124,443.03 = 49,890.14/x
  3. Step 3: Cross multiply
    90,175.71x = 124,443.03 × 49,890.14
  4. Step 4: Simplify right side
    90,175.71x = 6,208,480,395.26
  5. Step 5: Solve for x
    x = 6,208,480,395.26/90,175.71
  6. Step 6: Final answer
    x = 68,848.70

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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.