Home / 77,292,154.74-115,938,155.97-19,784,334.18

Finding the Fourth Proportional to 77,292,154.74, 115,938,155.97 and 19,784,334.18

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Solution

The fourth proportional to 77,292,154.74, 115,938,155.97 and 19,784,334.18 is: 29,676,481.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,292,154.74 : 115,938,155.97 = 19,784,334.18 : x
  2. Step 2: Convert to fraction form
    77,292,154.74/115,938,155.97 = 19,784,334.18/x
  3. Step 3: Cross multiply
    77,292,154.74x = 115,938,155.97 × 19,784,334.18
  4. Step 4: Simplify right side
    77,292,154.74x = 2,293,759,221,923,442
  5. Step 5: Solve for x
    x = 2,293,759,221,923,442/77,292,154.74
  6. Step 6: Final answer
    x = 29,676,481.78

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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.