Home / 74,773.35-103,128.89-47,918.36

Finding the Fourth Proportional to 74,773.35, 103,128.89 and 47,918.36

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Solution

The fourth proportional to 74,773.35, 103,128.89 and 47,918.36 is: 66,089.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,773.35 : 103,128.89 = 47,918.36 : x
  2. Step 2: Convert to fraction form
    74,773.35/103,128.89 = 47,918.36/x
  3. Step 3: Cross multiply
    74,773.35x = 103,128.89 × 47,918.36
  4. Step 4: Simplify right side
    74,773.35x = 4,941,766,522.18
  5. Step 5: Solve for x
    x = 4,941,766,522.18/74,773.35
  6. Step 6: Final answer
    x = 66,089.94

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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.