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Finding the Fourth Proportional to 34,791,078.80, 52,186,618.20 and 21,186,189.20

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Solution

The fourth proportional to 34,791,078.80, 52,186,618.20 and 21,186,189.20 is: 31,779,283.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,791,078.80 : 52,186,618.20 = 21,186,189.20 : x
  2. Step 2: Convert to fraction form
    34,791,078.80/52,186,618.20 = 21,186,189.20/x
  3. Step 3: Cross multiply
    34,791,078.80x = 52,186,618.20 × 21,186,189.20
  4. Step 4: Simplify right side
    34,791,078.80x = 1,105,635,566,893,363.50
  5. Step 5: Solve for x
    x = 1,105,635,566,893,363.50/34,791,078.80
  6. Step 6: Final answer
    x = 31,779,283.80

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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.