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Finding the Fourth Proportional to 70,993.32, 97,966.82 and 39,155.88

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Solution

The fourth proportional to 70,993.32, 97,966.82 and 39,155.88 is: 54,032.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,993.32 : 97,966.82 = 39,155.88 : x
  2. Step 2: Convert to fraction form
    70,993.32/97,966.82 = 39,155.88/x
  3. Step 3: Cross multiply
    70,993.32x = 97,966.82 × 39,155.88
  4. Step 4: Simplify right side
    70,993.32x = 3,835,977,047.90
  5. Step 5: Solve for x
    x = 3,835,977,047.90/70,993.32
  6. Step 6: Final answer
    x = 54,032.93

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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.