Home / 90,695.70-136,068.06-31,534.62

Finding the Fourth Proportional to 90,695.70, 136,068.06 and 31,534.62

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Solution

The fourth proportional to 90,695.70, 136,068.06 and 31,534.62 is: 47,310.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,695.70 : 136,068.06 = 31,534.62 : x
  2. Step 2: Convert to fraction form
    90,695.70/136,068.06 = 31,534.62/x
  3. Step 3: Cross multiply
    90,695.70x = 136,068.06 × 31,534.62
  4. Step 4: Simplify right side
    90,695.70x = 4,290,854,566.24
  5. Step 5: Solve for x
    x = 4,290,854,566.24/90,695.70
  6. Step 6: Final answer
    x = 47,310.45

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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.