Home / 90,891.81-136,345.01-31,726.17

Finding the Fourth Proportional to 90,891.81, 136,345.01 and 31,726.17

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Solution

The fourth proportional to 90,891.81, 136,345.01 and 31,726.17 is: 47,591.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,891.81 : 136,345.01 = 31,726.17 : x
  2. Step 2: Convert to fraction form
    90,891.81/136,345.01 = 31,726.17/x
  3. Step 3: Cross multiply
    90,891.81x = 136,345.01 × 31,726.17
  4. Step 4: Simplify right side
    90,891.81x = 4,325,704,807.28
  5. Step 5: Solve for x
    x = 4,325,704,807.28/90,891.81
  6. Step 6: Final answer
    x = 47,591.80

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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.