Home / 56,501.28-77,972.16-31,350.72

Finding the Fourth Proportional to 56,501.28, 77,972.16 and 31,350.72

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Solution

The fourth proportional to 56,501.28, 77,972.16 and 31,350.72 is: 43,264.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,501.28 : 77,972.16 = 31,350.72 : x
  2. Step 2: Convert to fraction form
    56,501.28/77,972.16 = 31,350.72/x
  3. Step 3: Cross multiply
    56,501.28x = 77,972.16 × 31,350.72
  4. Step 4: Simplify right side
    56,501.28x = 2,444,483,355.96
  5. Step 5: Solve for x
    x = 2,444,483,355.96/56,501.28
  6. Step 6: Final answer
    x = 43,264.21

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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.