Home / 52,537.20-78,737.40-21,336

Finding the Fourth Proportional to 52,537.20, 78,737.40 and 21,336

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Solution

The fourth proportional to 52,537.20, 78,737.40 and 21,336 is: 31,976.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,537.20 : 78,737.40 = 21,336 : x
  2. Step 2: Convert to fraction form
    52,537.20/78,737.40 = 21,336/x
  3. Step 3: Cross multiply
    52,537.20x = 78,737.40 × 21,336
  4. Step 4: Simplify right side
    52,537.20x = 1,679,941,166.40
  5. Step 5: Solve for x
    x = 1,679,941,166.40/52,537.20
  6. Step 6: Final answer
    x = 31,976.22

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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.