Home / 91,720.12-137,580.19-60,548.08

Finding the Fourth Proportional to 91,720.12, 137,580.19 and 60,548.08

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Solution

The fourth proportional to 91,720.12, 137,580.19 and 60,548.08 is: 90,822.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,720.12 : 137,580.19 = 60,548.08 : x
  2. Step 2: Convert to fraction form
    91,720.12/137,580.19 = 60,548.08/x
  3. Step 3: Cross multiply
    91,720.12x = 137,580.19 × 60,548.08
  4. Step 4: Simplify right side
    91,720.12x = 8,330,216,350.54
  5. Step 5: Solve for x
    x = 8,330,216,350.54/91,720.12
  6. Step 6: Final answer
    x = 90,822.13

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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.