Home / 66,194.16-91,339.80-39,337.20

Finding the Fourth Proportional to 66,194.16, 91,339.80 and 39,337.20

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Solution

The fourth proportional to 66,194.16, 91,339.80 and 39,337.20 is: 54,280.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,194.16 : 91,339.80 = 39,337.20 : x
  2. Step 2: Convert to fraction form
    66,194.16/91,339.80 = 39,337.20/x
  3. Step 3: Cross multiply
    66,194.16x = 91,339.80 × 39,337.20
  4. Step 4: Simplify right side
    66,194.16x = 3,593,051,980.56
  5. Step 5: Solve for x
    x = 3,593,051,980.56/66,194.16
  6. Step 6: Final answer
    x = 54,280.50

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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.