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Finding the Fourth Proportional to 77,358.70, 115,970.55 and 30,006.10

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Solution

The fourth proportional to 77,358.70, 115,970.55 and 30,006.10 is: 44,982.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,358.70 : 115,970.55 = 30,006.10 : x
  2. Step 2: Convert to fraction form
    77,358.70/115,970.55 = 30,006.10/x
  3. Step 3: Cross multiply
    77,358.70x = 115,970.55 × 30,006.10
  4. Step 4: Simplify right side
    77,358.70x = 3,479,823,920.36
  5. Step 5: Solve for x
    x = 3,479,823,920.36/77,358.70
  6. Step 6: Final answer
    x = 44,982.97

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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.