Home / 76,118.80-105,144.34-58,432.36

Finding the Fourth Proportional to 76,118.80, 105,144.34 and 58,432.36

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Solution

The fourth proportional to 76,118.80, 105,144.34 and 58,432.36 is: 80,713.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,118.80 : 105,144.34 = 58,432.36 : x
  2. Step 2: Convert to fraction form
    76,118.80/105,144.34 = 58,432.36/x
  3. Step 3: Cross multiply
    76,118.80x = 105,144.34 × 58,432.36
  4. Step 4: Simplify right side
    76,118.80x = 6,143,831,401.12
  5. Step 5: Solve for x
    x = 6,143,831,401.12/76,118.80
  6. Step 6: Final answer
    x = 80,713.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.