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Finding the Fourth Proportional to 90,275.64, 124,578.86 and 49,988.54

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Solution

The fourth proportional to 90,275.64, 124,578.86 and 49,988.54 is: 68,983.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,275.64 : 124,578.86 = 49,988.54 : x
  2. Step 2: Convert to fraction form
    90,275.64/124,578.86 = 49,988.54/x
  3. Step 3: Cross multiply
    90,275.64x = 124,578.86 × 49,988.54
  4. Step 4: Simplify right side
    90,275.64x = 6,227,515,326.26
  5. Step 5: Solve for x
    x = 6,227,515,326.26/90,275.64
  6. Step 6: Final answer
    x = 68,983.34

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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.