Home / 52,689.36-72,710.82-28,815.78

Finding the Fourth Proportional to 52,689.36, 72,710.82 and 28,815.78

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Solution

The fourth proportional to 52,689.36, 72,710.82 and 28,815.78 is: 39,765.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,689.36 : 72,710.82 = 28,815.78 : x
  2. Step 2: Convert to fraction form
    52,689.36/72,710.82 = 28,815.78/x
  3. Step 3: Cross multiply
    52,689.36x = 72,710.82 × 28,815.78
  4. Step 4: Simplify right side
    52,689.36x = 2,095,218,992.74
  5. Step 5: Solve for x
    x = 2,095,218,992.74/52,689.36
  6. Step 6: Final answer
    x = 39,765.50

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1.5x scale

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.