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Finding the Fourth Proportional to 45,967,807.80, 68,951,711.70 and 20,381,657.40

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Solution

The fourth proportional to 45,967,807.80, 68,951,711.70 and 20,381,657.40 is: 30,572,486.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,967,807.80 : 68,951,711.70 = 20,381,657.40 : x
  2. Step 2: Convert to fraction form
    45,967,807.80/68,951,711.70 = 20,381,657.40/x
  3. Step 3: Cross multiply
    45,967,807.80x = 68,951,711.70 × 20,381,657.40
  4. Step 4: Simplify right side
    45,967,807.80x = 1,405,350,165,012,971.50
  5. Step 5: Solve for x
    x = 1,405,350,165,012,971.50/45,967,807.80
  6. Step 6: Final answer
    x = 30,572,486.10

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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.