Home / 64,701.11-89,080.36-63,289.42

Finding the Fourth Proportional to 64,701.11, 89,080.36 and 63,289.42

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Solution

The fourth proportional to 64,701.11, 89,080.36 and 63,289.42 is: 87,136.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,701.11 : 89,080.36 = 63,289.42 : x
  2. Step 2: Convert to fraction form
    64,701.11/89,080.36 = 63,289.42/x
  3. Step 3: Cross multiply
    64,701.11x = 89,080.36 × 63,289.42
  4. Step 4: Simplify right side
    64,701.11x = 5,637,843,936.87
  5. Step 5: Solve for x
    x = 5,637,843,936.87/64,701.11
  6. Step 6: Final answer
    x = 87,136.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.