Home / 86,938,661.74-119,972,816.67-49,767,709.90

Finding the Fourth Proportional to 86,938,661.74, 119,972,816.67 and 49,767,709.90

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Solution

The fourth proportional to 86,938,661.74, 119,972,816.67 and 49,767,709.90 is: 68,677,987.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,938,661.74 : 119,972,816.67 = 49,767,709.90 : x
  2. Step 2: Convert to fraction form
    86,938,661.74/119,972,816.67 = 49,767,709.90/x
  3. Step 3: Cross multiply
    86,938,661.74x = 119,972,816.67 × 49,767,709.90
  4. Step 4: Simplify right side
    86,938,661.74x = 5,970,772,335,918,444
  5. Step 5: Solve for x
    x = 5,970,772,335,918,444/86,938,661.74
  6. Step 6: Final answer
    x = 68,677,987.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.