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Finding the Fourth Proportional to 70,427.16, 97,189.79 and 38,161.85

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Solution

The fourth proportional to 70,427.16, 97,189.79 and 38,161.85 is: 52,663.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,427.16 : 97,189.79 = 38,161.85 : x
  2. Step 2: Convert to fraction form
    70,427.16/97,189.79 = 38,161.85/x
  3. Step 3: Cross multiply
    70,427.16x = 97,189.79 × 38,161.85
  4. Step 4: Simplify right side
    70,427.16x = 3,708,941,510.75
  5. Step 5: Solve for x
    x = 3,708,941,510.75/70,427.16
  6. Step 6: Final answer
    x = 52,663.51

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