Home / 74,811.78-103,249.80-42,986.88

Finding the Fourth Proportional to 74,811.78, 103,249.80 and 42,986.88

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Solution

The fourth proportional to 74,811.78, 103,249.80 and 42,986.88 is: 59,327.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,811.78 : 103,249.80 = 42,986.88 : x
  2. Step 2: Convert to fraction form
    74,811.78/103,249.80 = 42,986.88/x
  3. Step 3: Cross multiply
    74,811.78x = 103,249.80 × 42,986.88
  4. Step 4: Simplify right side
    74,811.78x = 4,438,386,762.62
  5. Step 5: Solve for x
    x = 4,438,386,762.62/74,811.78
  6. Step 6: Final answer
    x = 59,327.38

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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.