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Finding the Fourth Proportional to 50,807.70, 70,113.87 and 28,146.65

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Solution

The fourth proportional to 50,807.70, 70,113.87 and 28,146.65 is: 38,841.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,807.70 : 70,113.87 = 28,146.65 : x
  2. Step 2: Convert to fraction form
    50,807.70/70,113.87 = 28,146.65/x
  3. Step 3: Cross multiply
    50,807.70x = 70,113.87 × 28,146.65
  4. Step 4: Simplify right side
    50,807.70x = 1,973,470,208.47
  5. Step 5: Solve for x
    x = 1,973,470,208.47/50,807.70
  6. Step 6: Final answer
    x = 38,841.95

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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.