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Finding the Fourth Proportional to 70,961.80, 97,922.80 and 39,130.96

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Solution

The fourth proportional to 70,961.80, 97,922.80 and 39,130.96 is: 53,998.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,961.80 : 97,922.80 = 39,130.96 : x
  2. Step 2: Convert to fraction form
    70,961.80/97,922.80 = 39,130.96/x
  3. Step 3: Cross multiply
    70,961.80x = 97,922.80 × 39,130.96
  4. Step 4: Simplify right side
    70,961.80x = 3,831,813,169.89
  5. Step 5: Solve for x
    x = 3,831,813,169.89/70,961.80
  6. Step 6: Final answer
    x = 53,998.25

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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.