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Finding the Fourth Proportional to 91,670, 137,505.11 and 25,110.70

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Solution

The fourth proportional to 91,670, 137,505.11 and 25,110.70 is: 37,666.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,670 : 137,505.11 = 25,110.70 : x
  2. Step 2: Convert to fraction form
    91,670/137,505.11 = 25,110.70/x
  3. Step 3: Cross multiply
    91,670x = 137,505.11 × 25,110.70
  4. Step 4: Simplify right side
    91,670x = 3,452,849,878.05
  5. Step 5: Solve for x
    x = 3,452,849,878.05/91,670
  6. Step 6: Final answer
    x = 37,666.08

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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.