Home / 85,498.69-128,248.07-22,318.64

Finding the Fourth Proportional to 85,498.69, 128,248.07 and 22,318.64

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Solution

The fourth proportional to 85,498.69, 128,248.07 and 22,318.64 is: 33,477.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,498.69 : 128,248.07 = 22,318.64 : x
  2. Step 2: Convert to fraction form
    85,498.69/128,248.07 = 22,318.64/x
  3. Step 3: Cross multiply
    85,498.69x = 128,248.07 × 22,318.64
  4. Step 4: Simplify right side
    85,498.69x = 2,862,322,505.02
  5. Step 5: Solve for x
    x = 2,862,322,505.02/85,498.69
  6. Step 6: Final answer
    x = 33,477.97

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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.