Home / 82,756.40-124,134.60-51,609.20

Finding the Fourth Proportional to 82,756.40, 124,134.60 and 51,609.20

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Solution

The fourth proportional to 82,756.40, 124,134.60 and 51,609.20 is: 77,413.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,756.40 : 124,134.60 = 51,609.20 : x
  2. Step 2: Convert to fraction form
    82,756.40/124,134.60 = 51,609.20/x
  3. Step 3: Cross multiply
    82,756.40x = 124,134.60 × 51,609.20
  4. Step 4: Simplify right side
    82,756.40x = 6,406,487,398.32
  5. Step 5: Solve for x
    x = 6,406,487,398.32/82,756.40
  6. Step 6: Final answer
    x = 77,413.80

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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.