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Finding the Fourth Proportional to 45,320.62, 67,990.65 and 19,010.20

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Solution

The fourth proportional to 45,320.62, 67,990.65 and 19,010.20 is: 28,519.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,320.62 : 67,990.65 = 19,010.20 : x
  2. Step 2: Convert to fraction form
    45,320.62/67,990.65 = 19,010.20/x
  3. Step 3: Cross multiply
    45,320.62x = 67,990.65 × 19,010.20
  4. Step 4: Simplify right side
    45,320.62x = 1,292,515,854.63
  5. Step 5: Solve for x
    x = 1,292,515,854.63/45,320.62
  6. Step 6: Final answer
    x = 28,519.38

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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.