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Finding the Fourth Proportional to 27,205,276.80, 40,713,436.80 and 18,702,220.80

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Solution

The fourth proportional to 27,205,276.80, 40,713,436.80 and 18,702,220.80 is: 27,988,382.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,205,276.80 : 40,713,436.80 = 18,702,220.80 : x
  2. Step 2: Convert to fraction form
    27,205,276.80/40,713,436.80 = 18,702,220.80/x
  3. Step 3: Cross multiply
    27,205,276.80x = 40,713,436.80 × 18,702,220.80
  4. Step 4: Simplify right side
    27,205,276.80x = 761,431,684,560,445.38
  5. Step 5: Solve for x
    x = 761,431,684,560,445.38/27,205,276.80
  6. Step 6: Final answer
    x = 27,988,382.19

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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.