Home / 91,490.57-137,181.65-28,291.99

Finding the Fourth Proportional to 91,490.57, 137,181.65 and 28,291.99

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Solution

The fourth proportional to 91,490.57, 137,181.65 and 28,291.99 is: 42,421.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,490.57 : 137,181.65 = 28,291.99 : x
  2. Step 2: Convert to fraction form
    91,490.57/137,181.65 = 28,291.99/x
  3. Step 3: Cross multiply
    91,490.57x = 137,181.65 × 28,291.99
  4. Step 4: Simplify right side
    91,490.57x = 3,881,141,385.57
  5. Step 5: Solve for x
    x = 3,881,141,385.57/91,490.57
  6. Step 6: Final answer
    x = 42,421.22

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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.