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Finding the Fourth Proportional to 70,928.03, 97,879.51 and 39,099.89

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Solution

The fourth proportional to 70,928.03, 97,879.51 and 39,099.89 is: 53,957.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,928.03 : 97,879.51 = 39,099.89 : x
  2. Step 2: Convert to fraction form
    70,928.03/97,879.51 = 39,099.89/x
  3. Step 3: Cross multiply
    70,928.03x = 97,879.51 × 39,099.89
  4. Step 4: Simplify right side
    70,928.03x = 3,827,078,074.25
  5. Step 5: Solve for x
    x = 3,827,078,074.25/70,928.03
  6. Step 6: Final answer
    x = 53,957.20

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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.