Home / 56,853.72-78,456.30-31,360.02

Finding the Fourth Proportional to 56,853.72, 78,456.30 and 31,360.02

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Solution

The fourth proportional to 56,853.72, 78,456.30 and 31,360.02 is: 43,275.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,853.72 : 78,456.30 = 31,360.02 : x
  2. Step 2: Convert to fraction form
    56,853.72/78,456.30 = 31,360.02/x
  3. Step 3: Cross multiply
    56,853.72x = 78,456.30 × 31,360.02
  4. Step 4: Simplify right side
    56,853.72x = 2,460,391,137.13
  5. Step 5: Solve for x
    x = 2,460,391,137.13/56,853.72
  6. Step 6: Final answer
    x = 43,275.82

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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.