Home / 91,445.18-137,180.52-28,270.44

Finding the Fourth Proportional to 91,445.18, 137,180.52 and 28,270.44

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Solution

The fourth proportional to 91,445.18, 137,180.52 and 28,270.44 is: 42,409.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,445.18 : 137,180.52 = 28,270.44 : x
  2. Step 2: Convert to fraction form
    91,445.18/137,180.52 = 28,270.44/x
  3. Step 3: Cross multiply
    91,445.18x = 137,180.52 × 28,270.44
  4. Step 4: Simplify right side
    91,445.18x = 3,878,153,659.83
  5. Step 5: Solve for x
    x = 3,878,153,659.83/91,445.18
  6. Step 6: Final answer
    x = 42,409.60

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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.