Home / 91,816.80-137,725.20-49,826.40

Finding the Fourth Proportional to 91,816.80, 137,725.20 and 49,826.40

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Solution

The fourth proportional to 91,816.80, 137,725.20 and 49,826.40 is: 74,739.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,816.80 : 137,725.20 = 49,826.40 : x
  2. Step 2: Convert to fraction form
    91,816.80/137,725.20 = 49,826.40/x
  3. Step 3: Cross multiply
    91,816.80x = 137,725.20 × 49,826.40
  4. Step 4: Simplify right side
    91,816.80x = 6,862,350,905.28
  5. Step 5: Solve for x
    x = 6,862,350,905.28/91,816.80
  6. Step 6: Final answer
    x = 74,739.60

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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.