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Finding the Fourth Proportional to 86,283.60, 129,474.72 and 46,843.92

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Solution

The fourth proportional to 86,283.60, 129,474.72 and 46,843.92 is: 70,292.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,283.60 : 129,474.72 = 46,843.92 : x
  2. Step 2: Convert to fraction form
    86,283.60/129,474.72 = 46,843.92/x
  3. Step 3: Cross multiply
    86,283.60x = 129,474.72 × 46,843.92
  4. Step 4: Simplify right side
    86,283.60x = 6,065,103,425.70
  5. Step 5: Solve for x
    x = 6,065,103,425.70/86,283.60
  6. Step 6: Final answer
    x = 70,292.66

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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.