Home / 91,615.27-137,442.62-28,434.19

Finding the Fourth Proportional to 91,615.27, 137,442.62 and 28,434.19

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Solution

The fourth proportional to 91,615.27, 137,442.62 and 28,434.19 is: 42,657.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,615.27 : 137,442.62 = 28,434.19 : x
  2. Step 2: Convert to fraction form
    91,615.27/137,442.62 = 28,434.19/x
  3. Step 3: Cross multiply
    91,615.27x = 137,442.62 × 28,434.19
  4. Step 4: Simplify right side
    91,615.27x = 3,908,069,571.18
  5. Step 5: Solve for x
    x = 3,908,069,571.18/91,615.27
  6. Step 6: Final answer
    x = 42,657.40

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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.