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Finding the Fourth Proportional to 70,992.47, 97,969.14 and 39,160.68

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Solution

The fourth proportional to 70,992.47, 97,969.14 and 39,160.68 is: 54,041.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,992.47 : 97,969.14 = 39,160.68 : x
  2. Step 2: Convert to fraction form
    70,992.47/97,969.14 = 39,160.68/x
  3. Step 3: Cross multiply
    70,992.47x = 97,969.14 × 39,160.68
  4. Step 4: Simplify right side
    70,992.47x = 3,836,538,141.42
  5. Step 5: Solve for x
    x = 3,836,538,141.42/70,992.47
  6. Step 6: Final answer
    x = 54,041.48

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1.5x scale

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.