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Finding the Fourth Proportional to 69,868.80, 96,421.14 and 38,039.76

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Solution

The fourth proportional to 69,868.80, 96,421.14 and 38,039.76 is: 52,496.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,868.80 : 96,421.14 = 38,039.76 : x
  2. Step 2: Convert to fraction form
    69,868.80/96,421.14 = 38,039.76/x
  3. Step 3: Cross multiply
    69,868.80x = 96,421.14 × 38,039.76
  4. Step 4: Simplify right side
    69,868.80x = 3,667,837,024.53
  5. Step 5: Solve for x
    x = 3,667,837,024.53/69,868.80
  6. Step 6: Final answer
    x = 52,496.06

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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.