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Finding the Fourth Proportional to 66,981,048.18, 100,407,798.99 and 21,510,956.22

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Solution

The fourth proportional to 66,981,048.18, 100,407,798.99 and 21,510,956.22 is: 32,245,953.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,981,048.18 : 100,407,798.99 = 21,510,956.22 : x
  2. Step 2: Convert to fraction form
    66,981,048.18/100,407,798.99 = 21,510,956.22/x
  3. Step 3: Cross multiply
    66,981,048.18x = 100,407,798.99 × 21,510,956.22
  4. Step 4: Simplify right side
    66,981,048.18x = 2,159,867,768,220,450
  5. Step 5: Solve for x
    x = 2,159,867,768,220,450/66,981,048.18
  6. Step 6: Final answer
    x = 32,245,953.55

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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.