Home / 85,772.40-128,663.64-33,182.16

Finding the Fourth Proportional to 85,772.40, 128,663.64 and 33,182.16

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Solution

The fourth proportional to 85,772.40, 128,663.64 and 33,182.16 is: 49,775.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,772.40 : 128,663.64 = 33,182.16 : x
  2. Step 2: Convert to fraction form
    85,772.40/128,663.64 = 33,182.16/x
  3. Step 3: Cross multiply
    85,772.40x = 128,663.64 × 33,182.16
  4. Step 4: Simplify right side
    85,772.40x = 4,269,337,488.66
  5. Step 5: Solve for x
    x = 4,269,337,488.66/85,772.40
  6. Step 6: Final answer
    x = 49,775.19

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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.