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Finding the Fourth Proportional to 74,908.60, 103,358.64 and 47,695.60

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Solution

The fourth proportional to 74,908.60, 103,358.64 and 47,695.60 is: 65,810.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,908.60 : 103,358.64 = 47,695.60 : x
  2. Step 2: Convert to fraction form
    74,908.60/103,358.64 = 47,695.60/x
  3. Step 3: Cross multiply
    74,908.60x = 103,358.64 × 47,695.60
  4. Step 4: Simplify right side
    74,908.60x = 4,929,752,349.98
  5. Step 5: Solve for x
    x = 4,929,752,349.98/74,908.60
  6. Step 6: Final answer
    x = 65,810.23

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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.