Home / 74,084.80-111,127.20-40,907.20

Finding the Fourth Proportional to 74,084.80, 111,127.20 and 40,907.20

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Solution

The fourth proportional to 74,084.80, 111,127.20 and 40,907.20 is: 61,360.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,084.80 : 111,127.20 = 40,907.20 : x
  2. Step 2: Convert to fraction form
    74,084.80/111,127.20 = 40,907.20/x
  3. Step 3: Cross multiply
    74,084.80x = 111,127.20 × 40,907.20
  4. Step 4: Simplify right side
    74,084.80x = 4,545,902,595.84
  5. Step 5: Solve for x
    x = 4,545,902,595.84/74,084.80
  6. Step 6: Final answer
    x = 61,360.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.