Home / 56,769.41-78,338.86-31,275.20

Finding the Fourth Proportional to 56,769.41, 78,338.86 and 31,275.20

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Solution

The fourth proportional to 56,769.41, 78,338.86 and 31,275.20 is: 43,158.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,769.41 : 78,338.86 = 31,275.20 : x
  2. Step 2: Convert to fraction form
    56,769.41/78,338.86 = 31,275.20/x
  3. Step 3: Cross multiply
    56,769.41x = 78,338.86 × 31,275.20
  4. Step 4: Simplify right side
    56,769.41x = 2,450,063,631.93
  5. Step 5: Solve for x
    x = 2,450,063,631.93/56,769.41
  6. Step 6: Final answer
    x = 43,158.16

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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.