Home / 56,355.28-77,775.56-31,209.68

Finding the Fourth Proportional to 56,355.28, 77,775.56 and 31,209.68

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Solution

The fourth proportional to 56,355.28, 77,775.56 and 31,209.68 is: 43,072.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,355.28 : 77,775.56 = 31,209.68 : x
  2. Step 2: Convert to fraction form
    56,355.28/77,775.56 = 31,209.68/x
  3. Step 3: Cross multiply
    56,355.28x = 77,775.56 × 31,209.68
  4. Step 4: Simplify right side
    56,355.28x = 2,427,350,339.42
  5. Step 5: Solve for x
    x = 2,427,350,339.42/56,355.28
  6. Step 6: Final answer
    x = 43,072.28

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1.5x scale

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.