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Finding the Fourth Proportional to 70,706,357.84, 105,962,774.16 and 53,420,348.72

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Solution

The fourth proportional to 70,706,357.84, 105,962,774.16 and 53,420,348.72 is: 80,057,416.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,706,357.84 : 105,962,774.16 = 53,420,348.72 : x
  2. Step 2: Convert to fraction form
    70,706,357.84/105,962,774.16 = 53,420,348.72/x
  3. Step 3: Cross multiply
    70,706,357.84x = 105,962,774.16 × 53,420,348.72
  4. Step 4: Simplify right side
    70,706,357.84x = 5,660,568,346,965,805
  5. Step 5: Solve for x
    x = 5,660,568,346,965,805/70,706,357.84
  6. Step 6: Final answer
    x = 80,057,416.62

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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.