Home / 90,875.86-136,304.07-31,712.65

Finding the Fourth Proportional to 90,875.86, 136,304.07 and 31,712.65

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Solution

The fourth proportional to 90,875.86, 136,304.07 and 31,712.65 is: 47,565.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,875.86 : 136,304.07 = 31,712.65 : x
  2. Step 2: Convert to fraction form
    90,875.86/136,304.07 = 31,712.65/x
  3. Step 3: Cross multiply
    90,875.86x = 136,304.07 × 31,712.65
  4. Step 4: Simplify right side
    90,875.86x = 4,322,562,805.80
  5. Step 5: Solve for x
    x = 4,322,562,805.80/90,875.86
  6. Step 6: Final answer
    x = 47,565.58

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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.