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Finding the Fourth Proportional to 91,358.98, 137,053.24 and 28,164.32

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Solution

The fourth proportional to 91,358.98, 137,053.24 and 28,164.32 is: 42,251.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,358.98 : 137,053.24 = 28,164.32 : x
  2. Step 2: Convert to fraction form
    91,358.98/137,053.24 = 28,164.32/x
  3. Step 3: Cross multiply
    91,358.98x = 137,053.24 × 28,164.32
  4. Step 4: Simplify right side
    91,358.98x = 3,860,010,623.13
  5. Step 5: Solve for x
    x = 3,860,010,623.13/91,358.98
  6. Step 6: Final answer
    x = 42,251.03

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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.