Home / 66,405.56-91,640.87-38,111.24

Finding the Fourth Proportional to 66,405.56, 91,640.87 and 38,111.24

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Solution

The fourth proportional to 66,405.56, 91,640.87 and 38,111.24 is: 52,594.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,405.56 : 91,640.87 = 38,111.24 : x
  2. Step 2: Convert to fraction form
    66,405.56/91,640.87 = 38,111.24/x
  3. Step 3: Cross multiply
    66,405.56x = 91,640.87 × 38,111.24
  4. Step 4: Simplify right side
    66,405.56x = 3,492,547,371.84
  5. Step 5: Solve for x
    x = 3,492,547,371.84/66,405.56
  6. Step 6: Final answer
    x = 52,594.20

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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.