Home / 72,320.36-108,590.70-68,756.36

Finding the Fourth Proportional to 72,320.36, 108,590.70 and 68,756.36

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Solution

The fourth proportional to 72,320.36, 108,590.70 and 68,756.36 is: 103,239.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,320.36 : 108,590.70 = 68,756.36 : x
  2. Step 2: Convert to fraction form
    72,320.36/108,590.70 = 68,756.36/x
  3. Step 3: Cross multiply
    72,320.36x = 108,590.70 × 68,756.36
  4. Step 4: Simplify right side
    72,320.36x = 7,466,301,261.85
  5. Step 5: Solve for x
    x = 7,466,301,261.85/72,320.36
  6. Step 6: Final answer
    x = 103,239.27

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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.