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Finding the Fourth Proportional to 86,718.54, 130,074.84 and 36,766.47

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Solution

The fourth proportional to 86,718.54, 130,074.84 and 36,766.47 is: 55,148.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,718.54 : 130,074.84 = 36,766.47 : x
  2. Step 2: Convert to fraction form
    86,718.54/130,074.84 = 36,766.47/x
  3. Step 3: Cross multiply
    86,718.54x = 130,074.84 × 36,766.47
  4. Step 4: Simplify right side
    86,718.54x = 4,782,392,702.61
  5. Step 5: Solve for x
    x = 4,782,392,702.61/86,718.54
  6. Step 6: Final answer
    x = 55,148.45

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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.