Home / 76,233.61-105,144.51-66,785.77

Finding the Fourth Proportional to 76,233.61, 105,144.51 and 66,785.77

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Solution

The fourth proportional to 76,233.61, 105,144.51 and 66,785.77 is: 92,113.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,233.61 : 105,144.51 = 66,785.77 : x
  2. Step 2: Convert to fraction form
    76,233.61/105,144.51 = 66,785.77/x
  3. Step 3: Cross multiply
    76,233.61x = 105,144.51 × 66,785.77
  4. Step 4: Simplify right side
    76,233.61x = 7,022,157,061.62
  5. Step 5: Solve for x
    x = 7,022,157,061.62/76,233.61
  6. Step 6: Final answer
    x = 92,113.66

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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.