Home / 74,187.09-102,382.64-45,509.98

Finding the Fourth Proportional to 74,187.09, 102,382.64 and 45,509.98

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Solution

The fourth proportional to 74,187.09, 102,382.64 and 45,509.98 is: 62,806.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,187.09 : 102,382.64 = 45,509.98 : x
  2. Step 2: Convert to fraction form
    74,187.09/102,382.64 = 45,509.98/x
  3. Step 3: Cross multiply
    74,187.09x = 102,382.64 × 45,509.98
  4. Step 4: Simplify right side
    74,187.09x = 4,659,431,671.20
  5. Step 5: Solve for x
    x = 4,659,431,671.20/74,187.09
  6. Step 6: Final answer
    x = 62,806.51

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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.