Home / 72,949.04-100,669.80-39,415.12

Finding the Fourth Proportional to 72,949.04, 100,669.80 and 39,415.12

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Solution

The fourth proportional to 72,949.04, 100,669.80 and 39,415.12 is: 54,392.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,949.04 : 100,669.80 = 39,415.12 : x
  2. Step 2: Convert to fraction form
    72,949.04/100,669.80 = 39,415.12/x
  3. Step 3: Cross multiply
    72,949.04x = 100,669.80 × 39,415.12
  4. Step 4: Simplify right side
    72,949.04x = 3,967,912,247.38
  5. Step 5: Solve for x
    x = 3,967,912,247.38/72,949.04
  6. Step 6: Final answer
    x = 54,392.93

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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.