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Finding the Fourth Proportional to 70,865.18, 97,881.72 and 51,453.13

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Solution

The fourth proportional to 70,865.18, 97,881.72 and 51,453.13 is: 71,069.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,865.18 : 97,881.72 = 51,453.13 : x
  2. Step 2: Convert to fraction form
    70,865.18/97,881.72 = 51,453.13/x
  3. Step 3: Cross multiply
    70,865.18x = 97,881.72 × 51,453.13
  4. Step 4: Simplify right side
    70,865.18x = 5,036,320,863.78
  5. Step 5: Solve for x
    x = 5,036,320,863.78/70,865.18
  6. Step 6: Final answer
    x = 71,069.05

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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.