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Finding the Fourth Proportional to 70,750.69, 97,635.43 and 38,918.90

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Solution

The fourth proportional to 70,750.69, 97,635.43 and 38,918.90 is: 53,707.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,750.69 : 97,635.43 = 38,918.90 : x
  2. Step 2: Convert to fraction form
    70,750.69/97,635.43 = 38,918.90/x
  3. Step 3: Cross multiply
    70,750.69x = 97,635.43 × 38,918.90
  4. Step 4: Simplify right side
    70,750.69x = 3,799,863,536.63
  5. Step 5: Solve for x
    x = 3,799,863,536.63/70,750.69
  6. Step 6: Final answer
    x = 53,707.79

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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.