Home / 51,428.28-77,127.29-21,845.88

Finding the Fourth Proportional to 51,428.28, 77,127.29 and 21,845.88

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Solution

The fourth proportional to 51,428.28, 77,127.29 and 21,845.88 is: 32,762.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,428.28 : 77,127.29 = 21,845.88 : x
  2. Step 2: Convert to fraction form
    51,428.28/77,127.29 = 21,845.88/x
  3. Step 3: Cross multiply
    51,428.28x = 77,127.29 × 21,845.88
  4. Step 4: Simplify right side
    51,428.28x = 1,684,913,191.04
  5. Step 5: Solve for x
    x = 1,684,913,191.04/51,428.28
  6. Step 6: Final answer
    x = 32,762.39

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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.