Home / 52,781.58-72,840.33-28,909.58

Finding the Fourth Proportional to 52,781.58, 72,840.33 and 28,909.58

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Solution

The fourth proportional to 52,781.58, 72,840.33 and 28,909.58 is: 39,896.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,781.58 : 72,840.33 = 28,909.58 : x
  2. Step 2: Convert to fraction form
    52,781.58/72,840.33 = 28,909.58/x
  3. Step 3: Cross multiply
    52,781.58x = 72,840.33 × 28,909.58
  4. Step 4: Simplify right side
    52,781.58x = 2,105,782,983.16
  5. Step 5: Solve for x
    x = 2,105,782,983.16/52,781.58
  6. Step 6: Final answer
    x = 39,896.17

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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.