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Finding the Fourth Proportional to 45,641.84, 68,462.75 and 18,987.32

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Solution

The fourth proportional to 45,641.84, 68,462.75 and 18,987.32 is: 28,480.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,641.84 : 68,462.75 = 18,987.32 : x
  2. Step 2: Convert to fraction form
    45,641.84/68,462.75 = 18,987.32/x
  3. Step 3: Cross multiply
    45,641.84x = 68,462.75 × 18,987.32
  4. Step 4: Simplify right side
    45,641.84x = 1,299,924,142.33
  5. Step 5: Solve for x
    x = 1,299,924,142.33/45,641.84
  6. Step 6: Final answer
    x = 28,480.98

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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.