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Finding the Fourth Proportional to 70,800.96, 97,708.10 and 38,972.82

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Solution

The fourth proportional to 70,800.96, 97,708.10 and 38,972.82 is: 53,784.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,800.96 : 97,708.10 = 38,972.82 : x
  2. Step 2: Convert to fraction form
    70,800.96/97,708.10 = 38,972.82/x
  3. Step 3: Cross multiply
    70,800.96x = 97,708.10 × 38,972.82
  4. Step 4: Simplify right side
    70,800.96x = 3,807,959,998.98
  5. Step 5: Solve for x
    x = 3,807,959,998.98/70,800.96
  6. Step 6: Final answer
    x = 53,784.02

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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.