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Finding the Fourth Proportional to 70,999.74, 97,979.96 and 39,168.63

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Solution

The fourth proportional to 70,999.74, 97,979.96 and 39,168.63 is: 54,052.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,999.74 : 97,979.96 = 39,168.63 : x
  2. Step 2: Convert to fraction form
    70,999.74/97,979.96 = 39,168.63/x
  3. Step 3: Cross multiply
    70,999.74x = 97,979.96 × 39,168.63
  4. Step 4: Simplify right side
    70,999.74x = 3,837,740,898.58
  5. Step 5: Solve for x
    x = 3,837,740,898.58/70,999.74
  6. Step 6: Final answer
    x = 54,052.89

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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.