Home / 74,936.80-112,387.20-43,278.40

Finding the Fourth Proportional to 74,936.80, 112,387.20 and 43,278.40

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Solution

The fourth proportional to 74,936.80, 112,387.20 and 43,278.40 is: 64,907.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,936.80 : 112,387.20 = 43,278.40 : x
  2. Step 2: Convert to fraction form
    74,936.80/112,387.20 = 43,278.40/x
  3. Step 3: Cross multiply
    74,936.80x = 112,387.20 × 43,278.40
  4. Step 4: Simplify right side
    74,936.80x = 4,863,938,196.48
  5. Step 5: Solve for x
    x = 4,863,938,196.48/74,936.80
  6. Step 6: Final answer
    x = 64,907.20

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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.