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Finding the Fourth Proportional to 90,062.60, 124,284.60 and 49,775.49

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Solution

The fourth proportional to 90,062.60, 124,284.60 and 49,775.49 is: 68,689.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,062.60 : 124,284.60 = 49,775.49 : x
  2. Step 2: Convert to fraction form
    90,062.60/124,284.60 = 49,775.49/x
  3. Step 3: Cross multiply
    90,062.60x = 124,284.60 × 49,775.49
  4. Step 4: Simplify right side
    90,062.60x = 6,186,326,864.45
  5. Step 5: Solve for x
    x = 6,186,326,864.45/90,062.60
  6. Step 6: Final answer
    x = 68,689.19

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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.