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Finding the Fourth Proportional to 104,950.40, 157,425.60 and 57,711.20

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Solution

The fourth proportional to 104,950.40, 157,425.60 and 57,711.20 is: 86,566.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,950.40 : 157,425.60 = 57,711.20 : x
  2. Step 2: Convert to fraction form
    104,950.40/157,425.60 = 57,711.20/x
  3. Step 3: Cross multiply
    104,950.40x = 157,425.60 × 57,711.20
  4. Step 4: Simplify right side
    104,950.40x = 9,085,220,286.72
  5. Step 5: Solve for x
    x = 9,085,220,286.72/104,950.40
  6. Step 6: Final answer
    x = 86,566.80

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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.