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Finding the Fourth Proportional to 70,816.82, 97,730.04 and 38,988.68

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Solution

The fourth proportional to 70,816.82, 97,730.04 and 38,988.68 is: 53,805.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,816.82 : 97,730.04 = 38,988.68 : x
  2. Step 2: Convert to fraction form
    70,816.82/97,730.04 = 38,988.68/x
  3. Step 3: Cross multiply
    70,816.82x = 97,730.04 × 38,988.68
  4. Step 4: Simplify right side
    70,816.82x = 3,810,365,255.95
  5. Step 5: Solve for x
    x = 3,810,365,255.95/70,816.82
  6. Step 6: Final answer
    x = 53,805.94

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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.