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Finding the Fourth Proportional to 50,688.95, 69,950.78 and 28,332.95

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Solution

The fourth proportional to 50,688.95, 69,950.78 and 28,332.95 is: 39,099.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,688.95 : 69,950.78 = 28,332.95 : x
  2. Step 2: Convert to fraction form
    50,688.95/69,950.78 = 28,332.95/x
  3. Step 3: Cross multiply
    50,688.95x = 69,950.78 × 28,332.95
  4. Step 4: Simplify right side
    50,688.95x = 1,981,911,460.78
  5. Step 5: Solve for x
    x = 1,981,911,460.78/50,688.95
  6. Step 6: Final answer
    x = 39,099.48

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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.