Home / 77,999.40-117,002.34-64,943.82

Finding the Fourth Proportional to 77,999.40, 117,002.34 and 64,943.82

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Solution

The fourth proportional to 77,999.40, 117,002.34 and 64,943.82 is: 97,418.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,999.40 : 117,002.34 = 64,943.82 : x
  2. Step 2: Convert to fraction form
    77,999.40/117,002.34 = 64,943.82/x
  3. Step 3: Cross multiply
    77,999.40x = 117,002.34 × 64,943.82
  4. Step 4: Simplify right side
    77,999.40x = 7,598,578,908.54
  5. Step 5: Solve for x
    x = 7,598,578,908.54/77,999.40
  6. Step 6: Final answer
    x = 97,418.43

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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.