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Finding the Fourth Proportional to 70,408.88, 97,164.72 and 38,577.92

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Solution

The fourth proportional to 70,408.88, 97,164.72 and 38,577.92 is: 53,237.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,408.88 : 97,164.72 = 38,577.92 : x
  2. Step 2: Convert to fraction form
    70,408.88/97,164.72 = 38,577.92/x
  3. Step 3: Cross multiply
    70,408.88x = 97,164.72 × 38,577.92
  4. Step 4: Simplify right side
    70,408.88x = 3,748,412,794.98
  5. Step 5: Solve for x
    x = 3,748,412,794.98/70,408.88
  6. Step 6: Final answer
    x = 53,237.78

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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.