Home / 71,123.48-98,153.21-40,908.75

Finding the Fourth Proportional to 71,123.48, 98,153.21 and 40,908.75

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Solution

The fourth proportional to 71,123.48, 98,153.21 and 40,908.75 is: 56,455.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,123.48 : 98,153.21 = 40,908.75 : x
  2. Step 2: Convert to fraction form
    71,123.48/98,153.21 = 40,908.75/x
  3. Step 3: Cross multiply
    71,123.48x = 98,153.21 × 40,908.75
  4. Step 4: Simplify right side
    71,123.48x = 4,015,325,129.59
  5. Step 5: Solve for x
    x = 4,015,325,129.59/71,123.48
  6. Step 6: Final answer
    x = 56,455.69

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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.