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Finding the Fourth Proportional to 90,624,493.80, 135,936,740.70 and 25,930,409.40

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Solution

The fourth proportional to 90,624,493.80, 135,936,740.70 and 25,930,409.40 is: 38,895,614.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,624,493.80 : 135,936,740.70 = 25,930,409.40 : x
  2. Step 2: Convert to fraction form
    90,624,493.80/135,936,740.70 = 25,930,409.40/x
  3. Step 3: Cross multiply
    90,624,493.80x = 135,936,740.70 × 25,930,409.40
  4. Step 4: Simplify right side
    90,624,493.80x = 3,524,895,338,852,642
  5. Step 5: Solve for x
    x = 3,524,895,338,852,642/90,624,493.80
  6. Step 6: Final answer
    x = 38,895,614.10

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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.