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Finding the Fourth Proportional to 90,860.88, 125,348.64 and 52,078.08

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Solution

The fourth proportional to 90,860.88, 125,348.64 and 52,078.08 is: 71,845.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,860.88 : 125,348.64 = 52,078.08 : x
  2. Step 2: Convert to fraction form
    90,860.88/125,348.64 = 52,078.08/x
  3. Step 3: Cross multiply
    90,860.88x = 125,348.64 × 52,078.08
  4. Step 4: Simplify right side
    90,860.88x = 6,527,916,501.81
  5. Step 5: Solve for x
    x = 6,527,916,501.81/90,860.88
  6. Step 6: Final answer
    x = 71,845.18

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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.