Home / 66,005.28-91,057.77-39,148.92

Finding the Fourth Proportional to 66,005.28, 91,057.77 and 39,148.92

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Solution

The fourth proportional to 66,005.28, 91,057.77 and 39,148.92 is: 54,008.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,005.28 : 91,057.77 = 39,148.92 : x
  2. Step 2: Convert to fraction form
    66,005.28/91,057.77 = 39,148.92/x
  3. Step 3: Cross multiply
    66,005.28x = 91,057.77 × 39,148.92
  4. Step 4: Simplify right side
    66,005.28x = 3,564,813,353.11
  5. Step 5: Solve for x
    x = 3,564,813,353.11/66,005.28
  6. Step 6: Final answer
    x = 54,008.00

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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.