Home / 52,689.04-72,712.44-28,815.28

Finding the Fourth Proportional to 52,689.04, 72,712.44 and 28,815.28

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Solution

The fourth proportional to 52,689.04, 72,712.44 and 28,815.28 is: 39,765.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,689.04 : 72,712.44 = 28,815.28 : x
  2. Step 2: Convert to fraction form
    52,689.04/72,712.44 = 28,815.28/x
  3. Step 3: Cross multiply
    52,689.04x = 72,712.44 × 28,815.28
  4. Step 4: Simplify right side
    52,689.04x = 2,095,229,318.08
  5. Step 5: Solve for x
    x = 2,095,229,318.08/52,689.04
  6. Step 6: Final answer
    x = 39,765.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.