Home / 52,811.55-72,881.63-28,939.75

Finding the Fourth Proportional to 52,811.55, 72,881.63 and 28,939.75

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Solution

The fourth proportional to 52,811.55, 72,881.63 and 28,939.75 is: 39,937.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,811.55 : 72,881.63 = 28,939.75 : x
  2. Step 2: Convert to fraction form
    52,811.55/72,881.63 = 28,939.75/x
  3. Step 3: Cross multiply
    52,811.55x = 72,881.63 × 28,939.75
  4. Step 4: Simplify right side
    52,811.55x = 2,109,176,151.79
  5. Step 5: Solve for x
    x = 2,109,176,151.79/52,811.55
  6. Step 6: Final answer
    x = 39,937.78

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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.