Home / 78,545.41-108,393.11-42,735.66

Finding the Fourth Proportional to 78,545.41, 108,393.11 and 42,735.66

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Solution

The fourth proportional to 78,545.41, 108,393.11 and 42,735.66 is: 58,975.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,545.41 : 108,393.11 = 42,735.66 : x
  2. Step 2: Convert to fraction form
    78,545.41/108,393.11 = 42,735.66/x
  3. Step 3: Cross multiply
    78,545.41x = 108,393.11 × 42,735.66
  4. Step 4: Simplify right side
    78,545.41x = 4,632,251,095.30
  5. Step 5: Solve for x
    x = 4,632,251,095.30/78,545.41
  6. Step 6: Final answer
    x = 58,975.45

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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.