Home / 56,029.81-77,321.14-30,879.31

Finding the Fourth Proportional to 56,029.81, 77,321.14 and 30,879.31

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Solution

The fourth proportional to 56,029.81, 77,321.14 and 30,879.31 is: 42,613.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,029.81 : 77,321.14 = 30,879.31 : x
  2. Step 2: Convert to fraction form
    56,029.81/77,321.14 = 30,879.31/x
  3. Step 3: Cross multiply
    56,029.81x = 77,321.14 × 30,879.31
  4. Step 4: Simplify right side
    56,029.81x = 2,387,623,451.61
  5. Step 5: Solve for x
    x = 2,387,623,451.61/56,029.81
  6. Step 6: Final answer
    x = 42,613.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.