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Finding the Fourth Proportional to 53,307.87, 80,010.17 and 28,368.92

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Solution

The fourth proportional to 53,307.87, 80,010.17 and 28,368.92 is: 42,579.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,307.87 : 80,010.17 = 28,368.92 : x
  2. Step 2: Convert to fraction form
    53,307.87/80,010.17 = 28,368.92/x
  3. Step 3: Cross multiply
    53,307.87x = 80,010.17 × 28,368.92
  4. Step 4: Simplify right side
    53,307.87x = 2,269,801,711.87
  5. Step 5: Solve for x
    x = 2,269,801,711.87/53,307.87
  6. Step 6: Final answer
    x = 42,579.11

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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.