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Finding the Fourth Proportional to 92,838.80, 139,277.50 and 42,213.70

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Solution

The fourth proportional to 92,838.80, 139,277.50 and 42,213.70 is: 63,329.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,838.80 : 139,277.50 = 42,213.70 : x
  2. Step 2: Convert to fraction form
    92,838.80/139,277.50 = 42,213.70/x
  3. Step 3: Cross multiply
    92,838.80x = 139,277.50 × 42,213.70
  4. Step 4: Simplify right side
    92,838.80x = 5,879,418,601.75
  5. Step 5: Solve for x
    x = 5,879,418,601.75/92,838.80
  6. Step 6: Final answer
    x = 63,329.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.