Home / 55,135.20-82,484.10-47,820.90

Finding the Fourth Proportional to 55,135.20, 82,484.10 and 47,820.90

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Solution

The fourth proportional to 55,135.20, 82,484.10 and 47,820.90 is: 71,541.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,135.20 : 82,484.10 = 47,820.90 : x
  2. Step 2: Convert to fraction form
    55,135.20/82,484.10 = 47,820.90/x
  3. Step 3: Cross multiply
    55,135.20x = 82,484.10 × 47,820.90
  4. Step 4: Simplify right side
    55,135.20x = 3,944,463,897.69
  5. Step 5: Solve for x
    x = 3,944,463,897.69/55,135.20
  6. Step 6: Final answer
    x = 71,541.66

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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.