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Finding the Fourth Proportional to 85,840.44, 128,788.67 and 41,472.28

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Solution

The fourth proportional to 85,840.44, 128,788.67 and 41,472.28 is: 62,221.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,840.44 : 128,788.67 = 41,472.28 : x
  2. Step 2: Convert to fraction form
    85,840.44/128,788.67 = 41,472.28/x
  3. Step 3: Cross multiply
    85,840.44x = 128,788.67 × 41,472.28
  4. Step 4: Simplify right side
    85,840.44x = 5,341,159,783.07
  5. Step 5: Solve for x
    x = 5,341,159,783.07/85,840.44
  6. Step 6: Final answer
    x = 62,221.95

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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.