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Finding the Fourth Proportional to 85,856.66, 128,798.80 and 41,486.67

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Solution

The fourth proportional to 85,856.66, 128,798.80 and 41,486.67 is: 62,236.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,856.66 : 128,798.80 = 41,486.67 : x
  2. Step 2: Convert to fraction form
    85,856.66/128,798.80 = 41,486.67/x
  3. Step 3: Cross multiply
    85,856.66x = 128,798.80 × 41,486.67
  4. Step 4: Simplify right side
    85,856.66x = 5,343,433,208.28
  5. Step 5: Solve for x
    x = 5,343,433,208.28/85,856.66
  6. Step 6: Final answer
    x = 62,236.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.