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Finding the Fourth Proportional to 86,592.60, 130,083.30 and 83,287.80

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Solution

The fourth proportional to 86,592.60, 130,083.30 and 83,287.80 is: 125,118.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,592.60 : 130,083.30 = 83,287.80 : x
  2. Step 2: Convert to fraction form
    86,592.60/130,083.30 = 83,287.80/x
  3. Step 3: Cross multiply
    86,592.60x = 130,083.30 × 83,287.80
  4. Step 4: Simplify right side
    86,592.60x = 10,834,351,873.74
  5. Step 5: Solve for x
    x = 10,834,351,873.74/86,592.60
  6. Step 6: Final answer
    x = 125,118.68

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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.