Home / 78,374.28-117,545.70-38,376.03

Finding the Fourth Proportional to 78,374.28, 117,545.70 and 38,376.03

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Solution

The fourth proportional to 78,374.28, 117,545.70 and 38,376.03 is: 57,556.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,374.28 : 117,545.70 = 38,376.03 : x
  2. Step 2: Convert to fraction form
    78,374.28/117,545.70 = 38,376.03/x
  3. Step 3: Cross multiply
    78,374.28x = 117,545.70 × 38,376.03
  4. Step 4: Simplify right side
    78,374.28x = 4,510,937,309.57
  5. Step 5: Solve for x
    x = 4,510,937,309.57/78,374.28
  6. Step 6: Final answer
    x = 57,556.35

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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.