Home / 74,629.40-102,988.41-40,637.36

Finding the Fourth Proportional to 74,629.40, 102,988.41 and 40,637.36

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Solution

The fourth proportional to 74,629.40, 102,988.41 and 40,637.36 is: 56,079.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,629.40 : 102,988.41 = 40,637.36 : x
  2. Step 2: Convert to fraction form
    74,629.40/102,988.41 = 40,637.36/x
  3. Step 3: Cross multiply
    74,629.40x = 102,988.41 × 40,637.36
  4. Step 4: Simplify right side
    74,629.40x = 4,185,177,093.00
  5. Step 5: Solve for x
    x = 4,185,177,093.00/74,629.40
  6. Step 6: Final answer
    x = 56,079.47

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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.