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Finding the Fourth Proportional to 45,290.80, 67,892.44 and 15,686.40

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Solution

The fourth proportional to 45,290.80, 67,892.44 and 15,686.40 is: 23,514.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,290.80 : 67,892.44 = 15,686.40 : x
  2. Step 2: Convert to fraction form
    45,290.80/67,892.44 = 15,686.40/x
  3. Step 3: Cross multiply
    45,290.80x = 67,892.44 × 15,686.40
  4. Step 4: Simplify right side
    45,290.80x = 1,064,987,970.82
  5. Step 5: Solve for x
    x = 1,064,987,970.82/45,290.80
  6. Step 6: Final answer
    x = 23,514.44

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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.