Home / 90,854.84-136,304.94-31,691.36

Finding the Fourth Proportional to 90,854.84, 136,304.94 and 31,691.36

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Solution

The fourth proportional to 90,854.84, 136,304.94 and 31,691.36 is: 47,544.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,854.84 : 136,304.94 = 31,691.36 : x
  2. Step 2: Convert to fraction form
    90,854.84/136,304.94 = 31,691.36/x
  3. Step 3: Cross multiply
    90,854.84x = 136,304.94 × 31,691.36
  4. Step 4: Simplify right side
    90,854.84x = 4,319,688,923.32
  5. Step 5: Solve for x
    x = 4,319,688,923.32/90,854.84
  6. Step 6: Final answer
    x = 47,544.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.