Home / 91,621.60-137,452.02-28,440.40

Finding the Fourth Proportional to 91,621.60, 137,452.02 and 28,440.40

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Solution

The fourth proportional to 91,621.60, 137,452.02 and 28,440.40 is: 42,666.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,621.60 : 137,452.02 = 28,440.40 : x
  2. Step 2: Convert to fraction form
    91,621.60/137,452.02 = 28,440.40/x
  3. Step 3: Cross multiply
    91,621.60x = 137,452.02 × 28,440.40
  4. Step 4: Simplify right side
    91,621.60x = 3,909,190,429.61
  5. Step 5: Solve for x
    x = 3,909,190,429.61/91,621.60
  6. Step 6: Final answer
    x = 42,666.69

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1.5x scale

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.