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Finding the Fourth Proportional to 75,993.80, 104,868.18 and 42,000.53

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Solution

The fourth proportional to 75,993.80, 104,868.18 and 42,000.53 is: 57,958.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,993.80 : 104,868.18 = 42,000.53 : x
  2. Step 2: Convert to fraction form
    75,993.80/104,868.18 = 42,000.53/x
  3. Step 3: Cross multiply
    75,993.80x = 104,868.18 × 42,000.53
  4. Step 4: Simplify right side
    75,993.80x = 4,404,518,615.79
  5. Step 5: Solve for x
    x = 4,404,518,615.79/75,993.80
  6. Step 6: Final answer
    x = 57,958.92

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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.