Home / 61,930.90-85,478.28-40,712.14

Finding the Fourth Proportional to 61,930.90, 85,478.28 and 40,712.14

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Solution

The fourth proportional to 61,930.90, 85,478.28 and 40,712.14 is: 56,191.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,930.90 : 85,478.28 = 40,712.14 : x
  2. Step 2: Convert to fraction form
    61,930.90/85,478.28 = 40,712.14/x
  3. Step 3: Cross multiply
    61,930.90x = 85,478.28 × 40,712.14
  4. Step 4: Simplify right side
    61,930.90x = 3,480,003,702.32
  5. Step 5: Solve for x
    x = 3,480,003,702.32/61,930.90
  6. Step 6: Final answer
    x = 56,191.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.