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Finding the Fourth Proportional to 72,352.64, 108,695.30 and 51,054.36

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Solution

The fourth proportional to 72,352.64, 108,695.30 and 51,054.36 is: 76,698.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,352.64 : 108,695.30 = 51,054.36 : x
  2. Step 2: Convert to fraction form
    72,352.64/108,695.30 = 51,054.36/x
  3. Step 3: Cross multiply
    72,352.64x = 108,695.30 × 51,054.36
  4. Step 4: Simplify right side
    72,352.64x = 5,549,368,976.51
  5. Step 5: Solve for x
    x = 5,549,368,976.51/72,352.64
  6. Step 6: Final answer
    x = 76,698.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.