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Finding the Fourth Proportional to 70,777.92, 97,670.70 and 38,943.30

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Solution

The fourth proportional to 70,777.92, 97,670.70 and 38,943.30 is: 53,740.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,777.92 : 97,670.70 = 38,943.30 : x
  2. Step 2: Convert to fraction form
    70,777.92/97,670.70 = 38,943.30/x
  3. Step 3: Cross multiply
    70,777.92x = 97,670.70 × 38,943.30
  4. Step 4: Simplify right side
    70,777.92x = 3,803,619,371.31
  5. Step 5: Solve for x
    x = 3,803,619,371.31/70,777.92
  6. Step 6: Final answer
    x = 53,740.20

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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.