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Finding the Fourth Proportional to 58,423.68, 87,648.48 and 18,984.78

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Solution

The fourth proportional to 58,423.68, 87,648.48 and 18,984.78 is: 28,481.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,423.68 : 87,648.48 = 18,984.78 : x
  2. Step 2: Convert to fraction form
    58,423.68/87,648.48 = 18,984.78/x
  3. Step 3: Cross multiply
    58,423.68x = 87,648.48 × 18,984.78
  4. Step 4: Simplify right side
    58,423.68x = 1,663,987,110.13
  5. Step 5: Solve for x
    x = 1,663,987,110.13/58,423.68
  6. Step 6: Final answer
    x = 28,481.38

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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.