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Finding the Fourth Proportional to 70,487.75, 97,278.25 and 40,272.42

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Solution

The fourth proportional to 70,487.75, 97,278.25 and 40,272.42 is: 55,578.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,487.75 : 97,278.25 = 40,272.42 : x
  2. Step 2: Convert to fraction form
    70,487.75/97,278.25 = 40,272.42/x
  3. Step 3: Cross multiply
    70,487.75x = 97,278.25 × 40,272.42
  4. Step 4: Simplify right side
    70,487.75x = 3,917,630,903.52
  5. Step 5: Solve for x
    x = 3,917,630,903.52/70,487.75
  6. Step 6: Final answer
    x = 55,578.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.