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Finding the Fourth Proportional to 70,638.62, 97,407.97 and 49,152.71

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Solution

The fourth proportional to 70,638.62, 97,407.97 and 49,152.71 is: 67,779.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,638.62 : 97,407.97 = 49,152.71 : x
  2. Step 2: Convert to fraction form
    70,638.62/97,407.97 = 49,152.71/x
  3. Step 3: Cross multiply
    70,638.62x = 97,407.97 × 49,152.71
  4. Step 4: Simplify right side
    70,638.62x = 4,787,865,455.34
  5. Step 5: Solve for x
    x = 4,787,865,455.34/70,638.62
  6. Step 6: Final answer
    x = 67,779.71

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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.