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Finding the Fourth Proportional to 145,854.88, 218,819.21 and 40,673.86

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Solution

The fourth proportional to 145,854.88, 218,819.21 and 40,673.86 is: 61,021.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,854.88 : 218,819.21 = 40,673.86 : x
  2. Step 2: Convert to fraction form
    145,854.88/218,819.21 = 40,673.86/x
  3. Step 3: Cross multiply
    145,854.88x = 218,819.21 × 40,673.86
  4. Step 4: Simplify right side
    145,854.88x = 8,900,221,912.85
  5. Step 5: Solve for x
    x = 8,900,221,912.85/145,854.88
  6. Step 6: Final answer
    x = 61,021.08

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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.