Home / 85,666.13-118,256.33-64,450.61

Finding the Fourth Proportional to 85,666.13, 118,256.33 and 64,450.61

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Solution

The fourth proportional to 85,666.13, 118,256.33 and 64,450.61 is: 88,969.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,666.13 : 118,256.33 = 64,450.61 : x
  2. Step 2: Convert to fraction form
    85,666.13/118,256.33 = 64,450.61/x
  3. Step 3: Cross multiply
    85,666.13x = 118,256.33 × 64,450.61
  4. Step 4: Simplify right side
    85,666.13x = 7,621,692,282.61
  5. Step 5: Solve for x
    x = 7,621,692,282.61/85,666.13
  6. Step 6: Final answer
    x = 88,969.73

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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.