Home / 72,006.14-99,368.50-40,174.36

Finding the Fourth Proportional to 72,006.14, 99,368.50 and 40,174.36

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Solution

The fourth proportional to 72,006.14, 99,368.50 and 40,174.36 is: 55,440.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,006.14 : 99,368.50 = 40,174.36 : x
  2. Step 2: Convert to fraction form
    72,006.14/99,368.50 = 40,174.36/x
  3. Step 3: Cross multiply
    72,006.14x = 99,368.50 × 40,174.36
  4. Step 4: Simplify right side
    72,006.14x = 3,992,065,891.66
  5. Step 5: Solve for x
    x = 3,992,065,891.66/72,006.14
  6. Step 6: Final answer
    x = 55,440.63

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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.