Home / 78,020.42-107,778.40-62,084.48

Finding the Fourth Proportional to 78,020.42, 107,778.40 and 62,084.48

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Solution

The fourth proportional to 78,020.42, 107,778.40 and 62,084.48 is: 85,764.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,020.42 : 107,778.40 = 62,084.48 : x
  2. Step 2: Convert to fraction form
    78,020.42/107,778.40 = 62,084.48/x
  3. Step 3: Cross multiply
    78,020.42x = 107,778.40 × 62,084.48
  4. Step 4: Simplify right side
    78,020.42x = 6,691,365,225.13
  5. Step 5: Solve for x
    x = 6,691,365,225.13/78,020.42
  6. Step 6: Final answer
    x = 85,764.29

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1.5x scale

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.