Home / 56,470.76-77,930.52-30,979.36

Finding the Fourth Proportional to 56,470.76, 77,930.52 and 30,979.36

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Solution

The fourth proportional to 56,470.76, 77,930.52 and 30,979.36 is: 42,751.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,470.76 : 77,930.52 = 30,979.36 : x
  2. Step 2: Convert to fraction form
    56,470.76/77,930.52 = 30,979.36/x
  3. Step 3: Cross multiply
    56,470.76x = 77,930.52 × 30,979.36
  4. Step 4: Simplify right side
    56,470.76x = 2,414,237,634.07
  5. Step 5: Solve for x
    x = 2,414,237,634.07/56,470.76
  6. Step 6: Final answer
    x = 42,751.99

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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.