Home / 78,764.40-108,567.54-68,529.24

Finding the Fourth Proportional to 78,764.40, 108,567.54 and 68,529.24

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Solution

The fourth proportional to 78,764.40, 108,567.54 and 68,529.24 is: 94,459.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,764.40 : 108,567.54 = 68,529.24 : x
  2. Step 2: Convert to fraction form
    78,764.40/108,567.54 = 68,529.24/x
  3. Step 3: Cross multiply
    78,764.40x = 108,567.54 × 68,529.24
  4. Step 4: Simplify right side
    78,764.40x = 7,440,051,004.87
  5. Step 5: Solve for x
    x = 7,440,051,004.87/78,764.40
  6. Step 6: Final answer
    x = 94,459.57

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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.