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Finding the Fourth Proportional to 77,422.80, 116,134.20 and 73,534.80

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Solution

The fourth proportional to 77,422.80, 116,134.20 and 73,534.80 is: 110,302.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,422.80 : 116,134.20 = 73,534.80 : x
  2. Step 2: Convert to fraction form
    77,422.80/116,134.20 = 73,534.80/x
  3. Step 3: Cross multiply
    77,422.80x = 116,134.20 × 73,534.80
  4. Step 4: Simplify right side
    77,422.80x = 8,539,905,170.16
  5. Step 5: Solve for x
    x = 8,539,905,170.16/77,422.80
  6. Step 6: Final answer
    x = 110,302.20

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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.