Home / 86,663.20-119,650.80-70,785.76

Finding the Fourth Proportional to 86,663.20, 119,650.80 and 70,785.76

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Solution

The fourth proportional to 86,663.20, 119,650.80 and 70,785.76 is: 97,729.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,663.20 : 119,650.80 = 70,785.76 : x
  2. Step 2: Convert to fraction form
    86,663.20/119,650.80 = 70,785.76/x
  3. Step 3: Cross multiply
    86,663.20x = 119,650.80 × 70,785.76
  4. Step 4: Simplify right side
    86,663.20x = 8,469,572,812.61
  5. Step 5: Solve for x
    x = 8,469,572,812.61/86,663.20
  6. Step 6: Final answer
    x = 97,729.75

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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.