Home / 85,833,004.80-128,749,507.20-76,479,643.20

Finding the Fourth Proportional to 85,833,004.80, 128,749,507.20 and 76,479,643.20

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Solution

The fourth proportional to 85,833,004.80, 128,749,507.20 and 76,479,643.20 is: 114,719,464.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,833,004.80 : 128,749,507.20 = 76,479,643.20 : x
  2. Step 2: Convert to fraction form
    85,833,004.80/128,749,507.20 = 76,479,643.20/x
  3. Step 3: Cross multiply
    85,833,004.80x = 128,749,507.20 × 76,479,643.20
  4. Step 4: Simplify right side
    85,833,004.80x = 9,846,716,372,831,832
  5. Step 5: Solve for x
    x = 9,846,716,372,831,832/85,833,004.80
  6. Step 6: Final answer
    x = 114,719,464.80

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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.