Home / 72,445.62-99,979.75-40,616.58

Finding the Fourth Proportional to 72,445.62, 99,979.75 and 40,616.58

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Solution

The fourth proportional to 72,445.62, 99,979.75 and 40,616.58 is: 56,053.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,445.62 : 99,979.75 = 40,616.58 : x
  2. Step 2: Convert to fraction form
    72,445.62/99,979.75 = 40,616.58/x
  3. Step 3: Cross multiply
    72,445.62x = 99,979.75 × 40,616.58
  4. Step 4: Simplify right side
    72,445.62x = 4,060,835,514.26
  5. Step 5: Solve for x
    x = 4,060,835,514.26/72,445.62
  6. Step 6: Final answer
    x = 56,053.57

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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.