Home / 56,319.28-77,720.72-31,168.80

Finding the Fourth Proportional to 56,319.28, 77,720.72 and 31,168.80

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Solution

The fourth proportional to 56,319.28, 77,720.72 and 31,168.80 is: 43,013.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,319.28 : 77,720.72 = 31,168.80 : x
  2. Step 2: Convert to fraction form
    56,319.28/77,720.72 = 31,168.80/x
  3. Step 3: Cross multiply
    56,319.28x = 77,720.72 × 31,168.80
  4. Step 4: Simplify right side
    56,319.28x = 2,422,461,577.54
  5. Step 5: Solve for x
    x = 2,422,461,577.54/56,319.28
  6. Step 6: Final answer
    x = 43,013.01

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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.