Home / 90,860.32-136,251.54-31,678.48

Finding the Fourth Proportional to 90,860.32, 136,251.54 and 31,678.48

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Solution

The fourth proportional to 90,860.32, 136,251.54 and 31,678.48 is: 47,504.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,860.32 : 136,251.54 = 31,678.48 : x
  2. Step 2: Convert to fraction form
    90,860.32/136,251.54 = 31,678.48/x
  3. Step 3: Cross multiply
    90,860.32x = 136,251.54 × 31,678.48
  4. Step 4: Simplify right side
    90,860.32x = 4,316,241,684.86
  5. Step 5: Solve for x
    x = 4,316,241,684.86/90,860.32
  6. Step 6: Final answer
    x = 47,504.14

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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.