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Finding the Fourth Proportional to 69,657.51, 96,129.27 and 40,979.19

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Solution

The fourth proportional to 69,657.51, 96,129.27 and 40,979.19 is: 56,552.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,657.51 : 96,129.27 = 40,979.19 : x
  2. Step 2: Convert to fraction form
    69,657.51/96,129.27 = 40,979.19/x
  3. Step 3: Cross multiply
    69,657.51x = 96,129.27 × 40,979.19
  4. Step 4: Simplify right side
    69,657.51x = 3,939,299,619.89
  5. Step 5: Solve for x
    x = 3,939,299,619.89/69,657.51
  6. Step 6: Final answer
    x = 56,552.40

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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.