Home / 85,969,893.51-128,758,387.52-67,483,759.64

Finding the Fourth Proportional to 85,969,893.51, 128,758,387.52 and 67,483,759.64

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Solution

The fourth proportional to 85,969,893.51, 128,758,387.52 and 67,483,759.64 is: 101,071,430.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,969,893.51 : 128,758,387.52 = 67,483,759.64 : x
  2. Step 2: Convert to fraction form
    85,969,893.51/128,758,387.52 = 67,483,759.64/x
  3. Step 3: Cross multiply
    85,969,893.51x = 128,758,387.52 × 67,483,759.64
  4. Step 4: Simplify right side
    85,969,893.51x = 8,689,100,074,558,573
  5. Step 5: Solve for x
    x = 8,689,100,074,558,573/85,969,893.51
  6. Step 6: Final answer
    x = 101,071,430.01

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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.