Home / 68,938,088.40-103,392,805.20-20,404,553.76

Finding the Fourth Proportional to 68,938,088.40, 103,392,805.20 and 20,404,553.76

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Solution

The fourth proportional to 68,938,088.40, 103,392,805.20 and 20,404,553.76 is: 30,602,589.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,938,088.40 : 103,392,805.20 = 20,404,553.76 : x
  2. Step 2: Convert to fraction form
    68,938,088.40/103,392,805.20 = 20,404,553.76/x
  3. Step 3: Cross multiply
    68,938,088.40x = 103,392,805.20 × 20,404,553.76
  4. Step 4: Simplify right side
    68,938,088.40x = 2,109,684,052,100,607.75
  5. Step 5: Solve for x
    x = 2,109,684,052,100,607.75/68,938,088.40
  6. Step 6: Final answer
    x = 30,602,589.96

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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.