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Finding the Fourth Proportional to 74,686.99, 103,066.73 and 40,695.71

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Solution

The fourth proportional to 74,686.99, 103,066.73 and 40,695.71 is: 56,159.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,686.99 : 103,066.73 = 40,695.71 : x
  2. Step 2: Convert to fraction form
    74,686.99/103,066.73 = 40,695.71/x
  3. Step 3: Cross multiply
    74,686.99x = 103,066.73 × 40,695.71
  4. Step 4: Simplify right side
    74,686.99x = 4,194,374,150.68
  5. Step 5: Solve for x
    x = 4,194,374,150.68/74,686.99
  6. Step 6: Final answer
    x = 56,159.37

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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.