Home / 74,118.80-102,283.20-40,126.38

Finding the Fourth Proportional to 74,118.80, 102,283.20 and 40,126.38

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Solution

The fourth proportional to 74,118.80, 102,283.20 and 40,126.38 is: 55,374.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,118.80 : 102,283.20 = 40,126.38 : x
  2. Step 2: Convert to fraction form
    74,118.80/102,283.20 = 40,126.38/x
  3. Step 3: Cross multiply
    74,118.80x = 102,283.20 × 40,126.38
  4. Step 4: Simplify right side
    74,118.80x = 4,104,254,550.82
  5. Step 5: Solve for x
    x = 4,104,254,550.82/74,118.80
  6. Step 6: Final answer
    x = 55,374.01

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1.5x scale

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.