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Finding the Fourth Proportional to 78,780.87, 118,171.44 and 23,376.87

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Solution

The fourth proportional to 78,780.87, 118,171.44 and 23,376.87 is: 35,065.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,780.87 : 118,171.44 = 23,376.87 : x
  2. Step 2: Convert to fraction form
    78,780.87/118,171.44 = 23,376.87/x
  3. Step 3: Cross multiply
    78,780.87x = 118,171.44 × 23,376.87
  4. Step 4: Simplify right side
    78,780.87x = 2,762,478,390.59
  5. Step 5: Solve for x
    x = 2,762,478,390.59/78,780.87
  6. Step 6: Final answer
    x = 35,065.35

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1.5x scale

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.