Home / 52,478.28-78,750.23-21,313.53

Finding the Fourth Proportional to 52,478.28, 78,750.23 and 21,313.53

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Solution

The fourth proportional to 52,478.28, 78,750.23 and 21,313.53 is: 31,983.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,478.28 : 78,750.23 = 21,313.53 : x
  2. Step 2: Convert to fraction form
    52,478.28/78,750.23 = 21,313.53/x
  3. Step 3: Cross multiply
    52,478.28x = 78,750.23 × 21,313.53
  4. Step 4: Simplify right side
    52,478.28x = 1,678,445,283.04
  5. Step 5: Solve for x
    x = 1,678,445,283.04/52,478.28
  6. Step 6: Final answer
    x = 31,983.62

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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.