Home / 85,831,517.70-128,747,276.55-49,551,812.10

Finding the Fourth Proportional to 85,831,517.70, 128,747,276.55 and 49,551,812.10

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Solution

The fourth proportional to 85,831,517.70, 128,747,276.55 and 49,551,812.10 is: 74,327,718.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,831,517.70 : 128,747,276.55 = 49,551,812.10 : x
  2. Step 2: Convert to fraction form
    85,831,517.70/128,747,276.55 = 49,551,812.10/x
  3. Step 3: Cross multiply
    85,831,517.70x = 128,747,276.55 × 49,551,812.10
  4. Step 4: Simplify right side
    85,831,517.70x = 6,379,660,855,992,336
  5. Step 5: Solve for x
    x = 6,379,660,855,992,336/85,831,517.70
  6. Step 6: Final answer
    x = 74,327,718.15

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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.