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Finding the Fourth Proportional to 38,521, 57,688.62 and 18,750.52

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Solution

The fourth proportional to 38,521, 57,688.62 and 18,750.52 is: 28,080.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,521 : 57,688.62 = 18,750.52 : x
  2. Step 2: Convert to fraction form
    38,521/57,688.62 = 18,750.52/x
  3. Step 3: Cross multiply
    38,521x = 57,688.62 × 18,750.52
  4. Step 4: Simplify right side
    38,521x = 1,081,691,623.08
  5. Step 5: Solve for x
    x = 1,081,691,623.08/38,521
  6. Step 6: Final answer
    x = 28,080.57

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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.