Home / 85,618.79-128,396.26-29,443.00

Finding the Fourth Proportional to 85,618.79, 128,396.26 and 29,443.00

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Solution

The fourth proportional to 85,618.79, 128,396.26 and 29,443.00 is: 44,153.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,618.79 : 128,396.26 = 29,443.00 : x
  2. Step 2: Convert to fraction form
    85,618.79/128,396.26 = 29,443.00/x
  3. Step 3: Cross multiply
    85,618.79x = 128,396.26 × 29,443.00
  4. Step 4: Simplify right side
    85,618.79x = 3,780,370,798.99
  5. Step 5: Solve for x
    x = 3,780,370,798.99/85,618.79
  6. Step 6: Final answer
    x = 44,153.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.