Home / 85,135.74-127,702.91-31,841.16

Finding the Fourth Proportional to 85,135.74, 127,702.91 and 31,841.16

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Solution

The fourth proportional to 85,135.74, 127,702.91 and 31,841.16 is: 47,761.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,135.74 : 127,702.91 = 31,841.16 : x
  2. Step 2: Convert to fraction form
    85,135.74/127,702.91 = 31,841.16/x
  3. Step 3: Cross multiply
    85,135.74x = 127,702.91 × 31,841.16
  4. Step 4: Simplify right side
    85,135.74x = 4,066,207,992.06
  5. Step 5: Solve for x
    x = 4,066,207,992.06/85,135.74
  6. Step 6: Final answer
    x = 47,761.47

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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.