Home / 85,003,153.10-127,788,164.85-72,532,004.30

Finding the Fourth Proportional to 85,003,153.10, 127,788,164.85 and 72,532,004.30

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Solution

The fourth proportional to 85,003,153.10, 127,788,164.85 and 72,532,004.30 is: 109,039,857.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,003,153.10 : 127,788,164.85 = 72,532,004.30 : x
  2. Step 2: Convert to fraction form
    85,003,153.10/127,788,164.85 = 72,532,004.30/x
  3. Step 3: Cross multiply
    85,003,153.10x = 127,788,164.85 × 72,532,004.30
  4. Step 4: Simplify right side
    85,003,153.10x = 9,268,731,722,389,308
  5. Step 5: Solve for x
    x = 9,268,731,722,389,308/85,003,153.10
  6. Step 6: Final answer
    x = 109,039,857.75

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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.