Home / 56,867.04-78,478.20-31,716

Finding the Fourth Proportional to 56,867.04, 78,478.20 and 31,716

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Solution

The fourth proportional to 56,867.04, 78,478.20 and 31,716 is: 43,769.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,867.04 : 78,478.20 = 31,716 : x
  2. Step 2: Convert to fraction form
    56,867.04/78,478.20 = 31,716/x
  3. Step 3: Cross multiply
    56,867.04x = 78,478.20 × 31,716
  4. Step 4: Simplify right side
    56,867.04x = 2,489,014,591.20
  5. Step 5: Solve for x
    x = 2,489,014,591.20/56,867.04
  6. Step 6: Final answer
    x = 43,769.02

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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.