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Finding the Fourth Proportional to 85,300.27, 127,973.09 and 29,140.29

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Solution

The fourth proportional to 85,300.27, 127,973.09 and 29,140.29 is: 43,718.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,300.27 : 127,973.09 = 29,140.29 : x
  2. Step 2: Convert to fraction form
    85,300.27/127,973.09 = 29,140.29/x
  3. Step 3: Cross multiply
    85,300.27x = 127,973.09 × 29,140.29
  4. Step 4: Simplify right side
    85,300.27x = 3,729,172,809.09
  5. Step 5: Solve for x
    x = 3,729,172,809.09/85,300.27
  6. Step 6: Final answer
    x = 43,718.19

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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.