Home / 90,631.10-125,088.82-57,904.58

Finding the Fourth Proportional to 90,631.10, 125,088.82 and 57,904.58

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Solution

The fourth proportional to 90,631.10, 125,088.82 and 57,904.58 is: 79,919.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,631.10 : 125,088.82 = 57,904.58 : x
  2. Step 2: Convert to fraction form
    90,631.10/125,088.82 = 57,904.58/x
  3. Step 3: Cross multiply
    90,631.10x = 125,088.82 × 57,904.58
  4. Step 4: Simplify right side
    90,631.10x = 7,243,215,584.80
  5. Step 5: Solve for x
    x = 7,243,215,584.80/90,631.10
  6. Step 6: Final answer
    x = 79,919.76

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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.