Home / 74,721.69-103,114.61-40,730.47

Finding the Fourth Proportional to 74,721.69, 103,114.61 and 40,730.47

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Solution

The fourth proportional to 74,721.69, 103,114.61 and 40,730.47 is: 56,207.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,721.69 : 103,114.61 = 40,730.47 : x
  2. Step 2: Convert to fraction form
    74,721.69/103,114.61 = 40,730.47/x
  3. Step 3: Cross multiply
    74,721.69x = 103,114.61 × 40,730.47
  4. Step 4: Simplify right side
    74,721.69x = 4,199,906,529.17
  5. Step 5: Solve for x
    x = 4,199,906,529.17/74,721.69
  6. Step 6: Final answer
    x = 56,207.33

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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.