Home / 77,721,816.97-107,256,627.03-42,439,867.21

Finding the Fourth Proportional to 77,721,816.97, 107,256,627.03 and 42,439,867.21

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Solution

The fourth proportional to 77,721,816.97, 107,256,627.03 and 42,439,867.21 is: 58,567,300.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,721,816.97 : 107,256,627.03 = 42,439,867.21 : x
  2. Step 2: Convert to fraction form
    77,721,816.97/107,256,627.03 = 42,439,867.21/x
  3. Step 3: Cross multiply
    77,721,816.97x = 107,256,627.03 × 42,439,867.21
  4. Step 4: Simplify right side
    77,721,816.97x = 4,551,957,008,545,697
  5. Step 5: Solve for x
    x = 4,551,957,008,545,697/77,721,816.97
  6. Step 6: Final answer
    x = 58,567,300.48

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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.