Home / 85,666.88-118,257.36-64,451.36

Finding the Fourth Proportional to 85,666.88, 118,257.36 and 64,451.36

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Solution

The fourth proportional to 85,666.88, 118,257.36 and 64,451.36 is: 88,970.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,666.88 : 118,257.36 = 64,451.36 : x
  2. Step 2: Convert to fraction form
    85,666.88/118,257.36 = 64,451.36/x
  3. Step 3: Cross multiply
    85,666.88x = 118,257.36 × 64,451.36
  4. Step 4: Simplify right side
    85,666.88x = 7,621,847,682.01
  5. Step 5: Solve for x
    x = 7,621,847,682.01/85,666.88
  6. Step 6: Final answer
    x = 88,970.76

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1.5x scale

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.