Home / 75,242.47-103,837.98-42,979.90

Finding the Fourth Proportional to 75,242.47, 103,837.98 and 42,979.90

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Solution

The fourth proportional to 75,242.47, 103,837.98 and 42,979.90 is: 59,314.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,242.47 : 103,837.98 = 42,979.90 : x
  2. Step 2: Convert to fraction form
    75,242.47/103,837.98 = 42,979.90/x
  3. Step 3: Cross multiply
    75,242.47x = 103,837.98 × 42,979.90
  4. Step 4: Simplify right side
    75,242.47x = 4,462,945,996.60
  5. Step 5: Solve for x
    x = 4,462,945,996.60/75,242.47
  6. Step 6: Final answer
    x = 59,314.19

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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.