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Finding the Fourth Proportional to 55,419.80, 83,129.70 and 48,202.70

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Solution

The fourth proportional to 55,419.80, 83,129.70 and 48,202.70 is: 72,304.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,419.80 : 83,129.70 = 48,202.70 : x
  2. Step 2: Convert to fraction form
    55,419.80/83,129.70 = 48,202.70/x
  3. Step 3: Cross multiply
    55,419.80x = 83,129.70 × 48,202.70
  4. Step 4: Simplify right side
    55,419.80x = 4,007,075,990.19
  5. Step 5: Solve for x
    x = 4,007,075,990.19/55,419.80
  6. Step 6: Final answer
    x = 72,304.05

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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.