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Finding the Fourth Proportional to 74,977.61, 103,472.24 and 43,146.63

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Solution

The fourth proportional to 74,977.61, 103,472.24 and 43,146.63 is: 59,544.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,977.61 : 103,472.24 = 43,146.63 : x
  2. Step 2: Convert to fraction form
    74,977.61/103,472.24 = 43,146.63/x
  3. Step 3: Cross multiply
    74,977.61x = 103,472.24 × 43,146.63
  4. Step 4: Simplify right side
    74,977.61x = 4,464,478,238.82
  5. Step 5: Solve for x
    x = 4,464,478,238.82/74,977.61
  6. Step 6: Final answer
    x = 59,544.16

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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.