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Finding the Fourth Proportional to 72,017.33, 99,378.99 and 39,750.44

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Solution

The fourth proportional to 72,017.33, 99,378.99 and 39,750.44 is: 54,852.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,017.33 : 99,378.99 = 39,750.44 : x
  2. Step 2: Convert to fraction form
    72,017.33/99,378.99 = 39,750.44/x
  3. Step 3: Cross multiply
    72,017.33x = 99,378.99 × 39,750.44
  4. Step 4: Simplify right side
    72,017.33x = 3,950,358,082.36
  5. Step 5: Solve for x
    x = 3,950,358,082.36/72,017.33
  6. Step 6: Final answer
    x = 54,852.89

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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.