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Finding the Fourth Proportional to 88,981.68, 122,782.86 and 51,248.64

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Solution

The fourth proportional to 88,981.68, 122,782.86 and 51,248.64 is: 70,716.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,981.68 : 122,782.86 = 51,248.64 : x
  2. Step 2: Convert to fraction form
    88,981.68/122,782.86 = 51,248.64/x
  3. Step 3: Cross multiply
    88,981.68x = 122,782.86 × 51,248.64
  4. Step 4: Simplify right side
    88,981.68x = 6,292,454,590.31
  5. Step 5: Solve for x
    x = 6,292,454,590.31/88,981.68
  6. Step 6: Final answer
    x = 70,716.29

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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.