Home / 91,620.02-137,449.65-28,438.76

Finding the Fourth Proportional to 91,620.02, 137,449.65 and 28,438.76

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Solution

The fourth proportional to 91,620.02, 137,449.65 and 28,438.76 is: 42,664.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,620.02 : 137,449.65 = 28,438.76 : x
  2. Step 2: Convert to fraction form
    91,620.02/137,449.65 = 28,438.76/x
  3. Step 3: Cross multiply
    91,620.02x = 137,449.65 × 28,438.76
  4. Step 4: Simplify right side
    91,620.02x = 3,908,897,608.43
  5. Step 5: Solve for x
    x = 3,908,897,608.43/91,620.02
  6. Step 6: Final answer
    x = 42,664.23

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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.