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Finding the Fourth Proportional to 70,302.96, 97,015.86 and 38,469.78

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Solution

The fourth proportional to 70,302.96, 97,015.86 and 38,469.78 is: 53,087.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,302.96 : 97,015.86 = 38,469.78 : x
  2. Step 2: Convert to fraction form
    70,302.96/97,015.86 = 38,469.78/x
  3. Step 3: Cross multiply
    70,302.96x = 97,015.86 × 38,469.78
  4. Step 4: Simplify right side
    70,302.96x = 3,732,178,790.71
  5. Step 5: Solve for x
    x = 3,732,178,790.71/70,302.96
  6. Step 6: Final answer
    x = 53,087.08

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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.