Home / 56,147.28-84,156.12-21,064.56

Finding the Fourth Proportional to 56,147.28, 84,156.12 and 21,064.56

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Solution

The fourth proportional to 56,147.28, 84,156.12 and 21,064.56 is: 31,572.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,147.28 : 84,156.12 = 21,064.56 : x
  2. Step 2: Convert to fraction form
    56,147.28/84,156.12 = 21,064.56/x
  3. Step 3: Cross multiply
    56,147.28x = 84,156.12 × 21,064.56
  4. Step 4: Simplify right side
    56,147.28x = 1,772,711,639.11
  5. Step 5: Solve for x
    x = 1,772,711,639.11/56,147.28
  6. Step 6: Final answer
    x = 31,572.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.