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Finding the Fourth Proportional to 70,686.06, 97,506.09 and 42,375.30

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Solution

The fourth proportional to 70,686.06, 97,506.09 and 42,375.30 is: 58,453.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,686.06 : 97,506.09 = 42,375.30 : x
  2. Step 2: Convert to fraction form
    70,686.06/97,506.09 = 42,375.30/x
  3. Step 3: Cross multiply
    70,686.06x = 97,506.09 × 42,375.30
  4. Step 4: Simplify right side
    70,686.06x = 4,131,849,815.58
  5. Step 5: Solve for x
    x = 4,131,849,815.58/70,686.06
  6. Step 6: Final answer
    x = 58,453.53

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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.