Home / 56,780.68-78,360.86-31,630.16

Finding the Fourth Proportional to 56,780.68, 78,360.86 and 31,630.16

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Solution

The fourth proportional to 56,780.68, 78,360.86 and 31,630.16 is: 43,651.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,780.68 : 78,360.86 = 31,630.16 : x
  2. Step 2: Convert to fraction form
    56,780.68/78,360.86 = 31,630.16/x
  3. Step 3: Cross multiply
    56,780.68x = 78,360.86 × 31,630.16
  4. Step 4: Simplify right side
    56,780.68x = 2,478,566,539.54
  5. Step 5: Solve for x
    x = 2,478,566,539.54/56,780.68
  6. Step 6: Final answer
    x = 43,651.58

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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.