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Finding the Fourth Proportional to 52,845.60, 79,306.80 and 21,703.20

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Solution

The fourth proportional to 52,845.60, 79,306.80 and 21,703.20 is: 32,570.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,845.60 : 79,306.80 = 21,703.20 : x
  2. Step 2: Convert to fraction form
    52,845.60/79,306.80 = 21,703.20/x
  3. Step 3: Cross multiply
    52,845.60x = 79,306.80 × 21,703.20
  4. Step 4: Simplify right side
    52,845.60x = 1,721,211,341.76
  5. Step 5: Solve for x
    x = 1,721,211,341.76/52,845.60
  6. Step 6: Final answer
    x = 32,570.57

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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.