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Finding the Fourth Proportional to 101,782.61, 140,367.98 and 63,545.65

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Solution

The fourth proportional to 101,782.61, 140,367.98 and 63,545.65 is: 87,635.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,782.61 : 140,367.98 = 63,545.65 : x
  2. Step 2: Convert to fraction form
    101,782.61/140,367.98 = 63,545.65/x
  3. Step 3: Cross multiply
    101,782.61x = 140,367.98 × 63,545.65
  4. Step 4: Simplify right side
    101,782.61x = 8,919,774,528.29
  5. Step 5: Solve for x
    x = 8,919,774,528.29/101,782.61
  6. Step 6: Final answer
    x = 87,635.55

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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.