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Finding the Fourth Proportional to 55,740.80, 83,611.20 and 53,148.80

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Solution

The fourth proportional to 55,740.80, 83,611.20 and 53,148.80 is: 79,723.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,740.80 : 83,611.20 = 53,148.80 : x
  2. Step 2: Convert to fraction form
    55,740.80/83,611.20 = 53,148.80/x
  3. Step 3: Cross multiply
    55,740.80x = 83,611.20 × 53,148.80
  4. Step 4: Simplify right side
    55,740.80x = 4,443,834,946.56
  5. Step 5: Solve for x
    x = 4,443,834,946.56/55,740.80
  6. Step 6: Final answer
    x = 79,723.20

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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.