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Finding the Fourth Proportional to 91,396.80, 137,095.20 and 52,030.80

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Solution

The fourth proportional to 91,396.80, 137,095.20 and 52,030.80 is: 78,046.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,396.80 : 137,095.20 = 52,030.80 : x
  2. Step 2: Convert to fraction form
    91,396.80/137,095.20 = 52,030.80/x
  3. Step 3: Cross multiply
    91,396.80x = 137,095.20 × 52,030.80
  4. Step 4: Simplify right side
    91,396.80x = 7,133,172,932.16
  5. Step 5: Solve for x
    x = 7,133,172,932.16/91,396.80
  6. Step 6: Final answer
    x = 78,046.20

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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.