Home / 85,536,563.90-128,304,845.85-84,780,736.70

Finding the Fourth Proportional to 85,536,563.90, 128,304,845.85 and 84,780,736.70

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Solution

The fourth proportional to 85,536,563.90, 128,304,845.85 and 84,780,736.70 is: 127,171,105.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,563.90 : 128,304,845.85 = 84,780,736.70 : x
  2. Step 2: Convert to fraction form
    85,536,563.90/128,304,845.85 = 84,780,736.70/x
  3. Step 3: Cross multiply
    85,536,563.90x = 128,304,845.85 × 84,780,736.70
  4. Step 4: Simplify right side
    85,536,563.90x = 10,877,779,353,342,938
  5. Step 5: Solve for x
    x = 10,877,779,353,342,938/85,536,563.90
  6. Step 6: Final answer
    x = 127,171,105.05

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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.