Home / 85,984,329.40-128,976,494.10-51,972,105.40

Finding the Fourth Proportional to 85,984,329.40, 128,976,494.10 and 51,972,105.40

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Solution

The fourth proportional to 85,984,329.40, 128,976,494.10 and 51,972,105.40 is: 77,958,158.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,984,329.40 : 128,976,494.10 = 51,972,105.40 : x
  2. Step 2: Convert to fraction form
    85,984,329.40/128,976,494.10 = 51,972,105.40/x
  3. Step 3: Cross multiply
    85,984,329.40x = 128,976,494.10 × 51,972,105.40
  4. Step 4: Simplify right side
    85,984,329.40x = 6,703,179,945,487,678
  5. Step 5: Solve for x
    x = 6,703,179,945,487,678/85,984,329.40
  6. Step 6: Final answer
    x = 77,958,158.10

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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.