Home / 76,247.45-105,220.20-42,255.82

Finding the Fourth Proportional to 76,247.45, 105,220.20 and 42,255.82

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Solution

The fourth proportional to 76,247.45, 105,220.20 and 42,255.82 is: 58,312.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,247.45 : 105,220.20 = 42,255.82 : x
  2. Step 2: Convert to fraction form
    76,247.45/105,220.20 = 42,255.82/x
  3. Step 3: Cross multiply
    76,247.45x = 105,220.20 × 42,255.82
  4. Step 4: Simplify right side
    76,247.45x = 4,446,165,831.56
  5. Step 5: Solve for x
    x = 4,446,165,831.56/76,247.45
  6. Step 6: Final answer
    x = 58,312.32

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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.