Home / 85,490.91-128,224.38-29,330.10

Finding the Fourth Proportional to 85,490.91, 128,224.38 and 29,330.10

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Solution

The fourth proportional to 85,490.91, 128,224.38 and 29,330.10 is: 43,991.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,490.91 : 128,224.38 = 29,330.10 : x
  2. Step 2: Convert to fraction form
    85,490.91/128,224.38 = 29,330.10/x
  3. Step 3: Cross multiply
    85,490.91x = 128,224.38 × 29,330.10
  4. Step 4: Simplify right side
    85,490.91x = 3,760,833,887.84
  5. Step 5: Solve for x
    x = 3,760,833,887.84/85,490.91
  6. Step 6: Final answer
    x = 43,991.04

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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.