Home / 90,901.71-136,374.39-28,572.21

Finding the Fourth Proportional to 90,901.71, 136,374.39 and 28,572.21

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Solution

The fourth proportional to 90,901.71, 136,374.39 and 28,572.21 is: 42,865.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,901.71 : 136,374.39 = 28,572.21 : x
  2. Step 2: Convert to fraction form
    90,901.71/136,374.39 = 28,572.21/x
  3. Step 3: Cross multiply
    90,901.71x = 136,374.39 × 28,572.21
  4. Step 4: Simplify right side
    90,901.71x = 3,896,517,709.70
  5. Step 5: Solve for x
    x = 3,896,517,709.70/90,901.71
  6. Step 6: Final answer
    x = 42,865.18

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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.