Home / 99,664.89-137,570.87-59,391.28

Finding the Fourth Proportional to 99,664.89, 137,570.87 and 59,391.28

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Solution

The fourth proportional to 99,664.89, 137,570.87 and 59,391.28 is: 81,979.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,664.89 : 137,570.87 = 59,391.28 : x
  2. Step 2: Convert to fraction form
    99,664.89/137,570.87 = 59,391.28/x
  3. Step 3: Cross multiply
    99,664.89x = 137,570.87 × 59,391.28
  4. Step 4: Simplify right side
    99,664.89x = 8,170,510,060.01
  5. Step 5: Solve for x
    x = 8,170,510,060.01/99,664.89
  6. Step 6: Final answer
    x = 81,979.82

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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.