Home / 64,656.85-89,205.67-39,155.05

Finding the Fourth Proportional to 64,656.85, 89,205.67 and 39,155.05

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Solution

The fourth proportional to 64,656.85, 89,205.67 and 39,155.05 is: 54,021.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,656.85 : 89,205.67 = 39,155.05 : x
  2. Step 2: Convert to fraction form
    64,656.85/89,205.67 = 39,155.05/x
  3. Step 3: Cross multiply
    64,656.85x = 89,205.67 × 39,155.05
  4. Step 4: Simplify right side
    64,656.85x = 3,492,852,469.13
  5. Step 5: Solve for x
    x = 3,492,852,469.13/64,656.85
  6. Step 6: Final answer
    x = 54,021.38

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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.