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Finding the Fourth Proportional to 70,491.78, 97,281.60 and 38,662.02

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Solution

The fourth proportional to 70,491.78, 97,281.60 and 38,662.02 is: 53,355.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,491.78 : 97,281.60 = 38,662.02 : x
  2. Step 2: Convert to fraction form
    70,491.78/97,281.60 = 38,662.02/x
  3. Step 3: Cross multiply
    70,491.78x = 97,281.60 × 38,662.02
  4. Step 4: Simplify right side
    70,491.78x = 3,761,103,164.83
  5. Step 5: Solve for x
    x = 3,761,103,164.83/70,491.78
  6. Step 6: Final answer
    x = 53,355.20

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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.