Home / 52,244.80-78,386.40-21,083.20

Finding the Fourth Proportional to 52,244.80, 78,386.40 and 21,083.20

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Solution

The fourth proportional to 52,244.80, 78,386.40 and 21,083.20 is: 31,632.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,244.80 : 78,386.40 = 21,083.20 : x
  2. Step 2: Convert to fraction form
    52,244.80/78,386.40 = 21,083.20/x
  3. Step 3: Cross multiply
    52,244.80x = 78,386.40 × 21,083.20
  4. Step 4: Simplify right side
    52,244.80x = 1,652,636,148.48
  5. Step 5: Solve for x
    x = 1,652,636,148.48/52,244.80
  6. Step 6: Final answer
    x = 31,632.55

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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.