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Finding the Fourth Proportional to 55,737.80, 83,620.08 and 20,677.76

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Solution

The fourth proportional to 55,737.80, 83,620.08 and 20,677.76 is: 31,021.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,737.80 : 83,620.08 = 20,677.76 : x
  2. Step 2: Convert to fraction form
    55,737.80/83,620.08 = 20,677.76/x
  3. Step 3: Cross multiply
    55,737.80x = 83,620.08 × 20,677.76
  4. Step 4: Simplify right side
    55,737.80x = 1,729,075,945.42
  5. Step 5: Solve for x
    x = 1,729,075,945.42/55,737.80
  6. Step 6: Final answer
    x = 31,021.60

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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.