Home / 56,353.28-77,772.80-31,207.68

Finding the Fourth Proportional to 56,353.28, 77,772.80 and 31,207.68

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Solution

The fourth proportional to 56,353.28, 77,772.80 and 31,207.68 is: 43,069.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,353.28 : 77,772.80 = 31,207.68 : x
  2. Step 2: Convert to fraction form
    56,353.28/77,772.80 = 31,207.68/x
  3. Step 3: Cross multiply
    56,353.28x = 77,772.80 × 31,207.68
  4. Step 4: Simplify right side
    56,353.28x = 2,427,108,655.10
  5. Step 5: Solve for x
    x = 2,427,108,655.10/56,353.28
  6. Step 6: Final answer
    x = 43,069.52

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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.