Home / 78,867.98-118,320.80-26,277.92

Finding the Fourth Proportional to 78,867.98, 118,320.80 and 26,277.92

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Solution

The fourth proportional to 78,867.98, 118,320.80 and 26,277.92 is: 39,423.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,867.98 : 118,320.80 = 26,277.92 : x
  2. Step 2: Convert to fraction form
    78,867.98/118,320.80 = 26,277.92/x
  3. Step 3: Cross multiply
    78,867.98x = 118,320.80 × 26,277.92
  4. Step 4: Simplify right side
    78,867.98x = 3,109,224,516.74
  5. Step 5: Solve for x
    x = 3,109,224,516.74/78,867.98
  6. Step 6: Final answer
    x = 39,423.15

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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.