Home / 74,629.15-102,988.07-40,637.11

Finding the Fourth Proportional to 74,629.15, 102,988.07 and 40,637.11

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Solution

The fourth proportional to 74,629.15, 102,988.07 and 40,637.11 is: 56,079.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,629.15 : 102,988.07 = 40,637.11 : x
  2. Step 2: Convert to fraction form
    74,629.15/102,988.07 = 40,637.11/x
  3. Step 3: Cross multiply
    74,629.15x = 102,988.07 × 40,637.11
  4. Step 4: Simplify right side
    74,629.15x = 4,185,137,326.09
  5. Step 5: Solve for x
    x = 4,185,137,326.09/74,629.15
  6. Step 6: Final answer
    x = 56,079.12

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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.