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Finding the Fourth Proportional to 84,855.30, 127,319.40 and 43,302.30

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Solution

The fourth proportional to 84,855.30, 127,319.40 and 43,302.30 is: 64,972.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,855.30 : 127,319.40 = 43,302.30 : x
  2. Step 2: Convert to fraction form
    84,855.30/127,319.40 = 43,302.30/x
  3. Step 3: Cross multiply
    84,855.30x = 127,319.40 × 43,302.30
  4. Step 4: Simplify right side
    84,855.30x = 5,513,222,854.62
  5. Step 5: Solve for x
    x = 5,513,222,854.62/84,855.30
  6. Step 6: Final answer
    x = 64,972.05

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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.