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Finding the Fourth Proportional to 77,801.20, 116,701.80 and 70,912.15

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Solution

The fourth proportional to 77,801.20, 116,701.80 and 70,912.15 is: 106,368.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,801.20 : 116,701.80 = 70,912.15 : x
  2. Step 2: Convert to fraction form
    77,801.20/116,701.80 = 70,912.15/x
  3. Step 3: Cross multiply
    77,801.20x = 116,701.80 × 70,912.15
  4. Step 4: Simplify right side
    77,801.20x = 8,275,575,546.87
  5. Step 5: Solve for x
    x = 8,275,575,546.87/77,801.20
  6. Step 6: Final answer
    x = 106,368.23

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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.