Home / 77,145,260.79-115,718,540.01-19,637,541.75

Finding the Fourth Proportional to 77,145,260.79, 115,718,540.01 and 19,637,541.75

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Solution

The fourth proportional to 77,145,260.79, 115,718,540.01 and 19,637,541.75 is: 29,456,477.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,145,260.79 : 115,718,540.01 = 19,637,541.75 : x
  2. Step 2: Convert to fraction form
    77,145,260.79/115,718,540.01 = 19,637,541.75/x
  3. Step 3: Cross multiply
    77,145,260.79x = 115,718,540.01 × 19,637,541.75
  4. Step 4: Simplify right side
    77,145,260.79x = 2,272,427,660,695,420.50
  5. Step 5: Solve for x
    x = 2,272,427,660,695,420.50/77,145,260.79
  6. Step 6: Final answer
    x = 29,456,477.79

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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.