Home / 74,476.88-102,778.62-40,485.38

Finding the Fourth Proportional to 74,476.88, 102,778.62 and 40,485.38

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Solution

The fourth proportional to 74,476.88, 102,778.62 and 40,485.38 is: 55,870.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,476.88 : 102,778.62 = 40,485.38 : x
  2. Step 2: Convert to fraction form
    74,476.88/102,778.62 = 40,485.38/x
  3. Step 3: Cross multiply
    74,476.88x = 102,778.62 × 40,485.38
  4. Step 4: Simplify right side
    74,476.88x = 4,161,031,486.58
  5. Step 5: Solve for x
    x = 4,161,031,486.58/74,476.88
  6. Step 6: Final answer
    x = 55,870.11

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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.