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Finding the Fourth Proportional to 83,155.40, 124,811.40 and 43,740.80

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Solution

The fourth proportional to 83,155.40, 124,811.40 and 43,740.80 is: 65,652.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,155.40 : 124,811.40 = 43,740.80 : x
  2. Step 2: Convert to fraction form
    83,155.40/124,811.40 = 43,740.80/x
  3. Step 3: Cross multiply
    83,155.40x = 124,811.40 × 43,740.80
  4. Step 4: Simplify right side
    83,155.40x = 5,459,350,485.12
  5. Step 5: Solve for x
    x = 5,459,350,485.12/83,155.40
  6. Step 6: Final answer
    x = 65,652.39

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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.