Home / 77,816.46-107,820.38-76,134.90

Finding the Fourth Proportional to 77,816.46, 107,820.38 and 76,134.90

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Solution

The fourth proportional to 77,816.46, 107,820.38 and 76,134.90 is: 105,490.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,816.46 : 107,820.38 = 76,134.90 : x
  2. Step 2: Convert to fraction form
    77,816.46/107,820.38 = 76,134.90/x
  3. Step 3: Cross multiply
    77,816.46x = 107,820.38 × 76,134.90
  4. Step 4: Simplify right side
    77,816.46x = 8,208,893,849.26
  5. Step 5: Solve for x
    x = 8,208,893,849.26/77,816.46
  6. Step 6: Final answer
    x = 105,490.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.