Home / 85,831,561.20-128,747,341.80-49,551,855.60

Finding the Fourth Proportional to 85,831,561.20, 128,747,341.80 and 49,551,855.60

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Solution

The fourth proportional to 85,831,561.20, 128,747,341.80 and 49,551,855.60 is: 74,327,783.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,831,561.20 : 128,747,341.80 = 49,551,855.60 : x
  2. Step 2: Convert to fraction form
    85,831,561.20/128,747,341.80 = 49,551,855.60/x
  3. Step 3: Cross multiply
    85,831,561.20x = 128,747,341.80 × 49,551,855.60
  4. Step 4: Simplify right side
    85,831,561.20x = 6,379,669,689,757,444
  5. Step 5: Solve for x
    x = 6,379,669,689,757,444/85,831,561.20
  6. Step 6: Final answer
    x = 74,327,783.40

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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.