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Finding the Fourth Proportional to 84,020.80, 115,927.20 and 52,187.20

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Solution

The fourth proportional to 84,020.80, 115,927.20 and 52,187.20 is: 72,004.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,020.80 : 115,927.20 = 52,187.20 : x
  2. Step 2: Convert to fraction form
    84,020.80/115,927.20 = 52,187.20/x
  3. Step 3: Cross multiply
    84,020.80x = 115,927.20 × 52,187.20
  4. Step 4: Simplify right side
    84,020.80x = 6,049,915,971.84
  5. Step 5: Solve for x
    x = 6,049,915,971.84/84,020.80
  6. Step 6: Final answer
    x = 72,004.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.