Home / 52,359.40-78,513.15-18,620.36

Finding the Fourth Proportional to 52,359.40, 78,513.15 and 18,620.36

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Solution

The fourth proportional to 52,359.40, 78,513.15 and 18,620.36 is: 27,921.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,359.40 : 78,513.15 = 18,620.36 : x
  2. Step 2: Convert to fraction form
    52,359.40/78,513.15 = 18,620.36/x
  3. Step 3: Cross multiply
    52,359.40x = 78,513.15 × 18,620.36
  4. Step 4: Simplify right side
    52,359.40x = 1,461,942,763.86
  5. Step 5: Solve for x
    x = 1,461,942,763.86/52,359.40
  6. Step 6: Final answer
    x = 27,921.31

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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.