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Finding the Fourth Proportional to 109,369.20, 164,053.80 and 47,039.70

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Solution

The fourth proportional to 109,369.20, 164,053.80 and 47,039.70 is: 70,559.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,369.20 : 164,053.80 = 47,039.70 : x
  2. Step 2: Convert to fraction form
    109,369.20/164,053.80 = 47,039.70/x
  3. Step 3: Cross multiply
    109,369.20x = 164,053.80 × 47,039.70
  4. Step 4: Simplify right side
    109,369.20x = 7,717,041,535.86
  5. Step 5: Solve for x
    x = 7,717,041,535.86/109,369.20
  6. Step 6: Final answer
    x = 70,559.55

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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.