Home / 74,629.69-102,987.50-40,638.59

Finding the Fourth Proportional to 74,629.69, 102,987.50 and 40,638.59

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Solution

The fourth proportional to 74,629.69, 102,987.50 and 40,638.59 is: 56,080.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,629.69 : 102,987.50 = 40,638.59 : x
  2. Step 2: Convert to fraction form
    74,629.69/102,987.50 = 40,638.59/x
  3. Step 3: Cross multiply
    74,629.69x = 102,987.50 × 40,638.59
  4. Step 4: Simplify right side
    74,629.69x = 4,185,266,455.70
  5. Step 5: Solve for x
    x = 4,185,266,455.70/74,629.69
  6. Step 6: Final answer
    x = 56,080.45

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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.