Home / 81,350.53-112,184.87-63,439.00

Finding the Fourth Proportional to 81,350.53, 112,184.87 and 63,439.00

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Solution

The fourth proportional to 81,350.53, 112,184.87 and 63,439.00 is: 87,484.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,350.53 : 112,184.87 = 63,439.00 : x
  2. Step 2: Convert to fraction form
    81,350.53/112,184.87 = 63,439.00/x
  3. Step 3: Cross multiply
    81,350.53x = 112,184.87 × 63,439.00
  4. Step 4: Simplify right side
    81,350.53x = 7,116,895,370.27
  5. Step 5: Solve for x
    x = 7,116,895,370.27/81,350.53
  6. Step 6: Final answer
    x = 87,484.32

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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.