Home / 82,218.40-123,128.80-47,051.44

Finding the Fourth Proportional to 82,218.40, 123,128.80 and 47,051.44

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Solution

The fourth proportional to 82,218.40, 123,128.80 and 47,051.44 is: 70,463.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,218.40 : 123,128.80 = 47,051.44 : x
  2. Step 2: Convert to fraction form
    82,218.40/123,128.80 = 47,051.44/x
  3. Step 3: Cross multiply
    82,218.40x = 123,128.80 × 47,051.44
  4. Step 4: Simplify right side
    82,218.40x = 5,793,387,345.47
  5. Step 5: Solve for x
    x = 5,793,387,345.47/82,218.40
  6. Step 6: Final answer
    x = 70,463.39

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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.