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Finding the Fourth Proportional to 85,300.54, 127,950.81 and 43,721.02

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Solution

The fourth proportional to 85,300.54, 127,950.81 and 43,721.02 is: 65,581.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,300.54 : 127,950.81 = 43,721.02 : x
  2. Step 2: Convert to fraction form
    85,300.54/127,950.81 = 43,721.02/x
  3. Step 3: Cross multiply
    85,300.54x = 127,950.81 × 43,721.02
  4. Step 4: Simplify right side
    85,300.54x = 5,594,139,923.03
  5. Step 5: Solve for x
    x = 5,594,139,923.03/85,300.54
  6. Step 6: Final answer
    x = 65,581.53

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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.