Home / 91,013.47-136,490.49-30,207.40

Finding the Fourth Proportional to 91,013.47, 136,490.49 and 30,207.40

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Solution

The fourth proportional to 91,013.47, 136,490.49 and 30,207.40 is: 45,301.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,013.47 : 136,490.49 = 30,207.40 : x
  2. Step 2: Convert to fraction form
    91,013.47/136,490.49 = 30,207.40/x
  3. Step 3: Cross multiply
    91,013.47x = 136,490.49 × 30,207.40
  4. Step 4: Simplify right side
    91,013.47x = 4,123,022,486.40
  5. Step 5: Solve for x
    x = 4,123,022,486.40/91,013.47
  6. Step 6: Final answer
    x = 45,301.24

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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.