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Finding the Fourth Proportional to 91,590.48, 137,394.43 and 28,411.29

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Solution

The fourth proportional to 91,590.48, 137,394.43 and 28,411.29 is: 42,619.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,590.48 : 137,394.43 = 28,411.29 : x
  2. Step 2: Convert to fraction form
    91,590.48/137,394.43 = 28,411.29/x
  3. Step 3: Cross multiply
    91,590.48x = 137,394.43 × 28,411.29
  4. Step 4: Simplify right side
    91,590.48x = 3,903,552,924.09
  5. Step 5: Solve for x
    x = 3,903,552,924.09/91,590.48
  6. Step 6: Final answer
    x = 42,619.64

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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.