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Finding the Fourth Proportional to 58,350.78, 87,540.12 and 18,907.92

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Solution

The fourth proportional to 58,350.78, 87,540.12 and 18,907.92 is: 28,366.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,350.78 : 87,540.12 = 18,907.92 : x
  2. Step 2: Convert to fraction form
    58,350.78/87,540.12 = 18,907.92/x
  3. Step 3: Cross multiply
    58,350.78x = 87,540.12 × 18,907.92
  4. Step 4: Simplify right side
    58,350.78x = 1,655,201,585.75
  5. Step 5: Solve for x
    x = 1,655,201,585.75/58,350.78
  6. Step 6: Final answer
    x = 28,366.40

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1.5x scale

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.