Home / 72,339.05-99,825.14-40,506.36

Finding the Fourth Proportional to 72,339.05, 99,825.14 and 40,506.36

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Solution

The fourth proportional to 72,339.05, 99,825.14 and 40,506.36 is: 55,897.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,339.05 : 99,825.14 = 40,506.36 : x
  2. Step 2: Convert to fraction form
    72,339.05/99,825.14 = 40,506.36/x
  3. Step 3: Cross multiply
    72,339.05x = 99,825.14 × 40,506.36
  4. Step 4: Simplify right side
    72,339.05x = 4,043,552,558.76
  5. Step 5: Solve for x
    x = 4,043,552,558.76/72,339.05
  6. Step 6: Final answer
    x = 55,897.23

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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.