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Finding the Fourth Proportional to 70,694.85, 97,560.77 and 38,431.64

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Solution

The fourth proportional to 70,694.85, 97,560.77 and 38,431.64 is: 53,036.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,694.85 : 97,560.77 = 38,431.64 : x
  2. Step 2: Convert to fraction form
    70,694.85/97,560.77 = 38,431.64/x
  3. Step 3: Cross multiply
    70,694.85x = 97,560.77 × 38,431.64
  4. Step 4: Simplify right side
    70,694.85x = 3,749,420,442.51
  5. Step 5: Solve for x
    x = 3,749,420,442.51/70,694.85
  6. Step 6: Final answer
    x = 53,036.68

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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.