Home / 42,011.77-57,980.33-31,382.95

Finding the Fourth Proportional to 42,011.77, 57,980.33 and 31,382.95

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Solution

The fourth proportional to 42,011.77, 57,980.33 and 31,382.95 is: 43,311.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,011.77 : 57,980.33 = 31,382.95 : x
  2. Step 2: Convert to fraction form
    42,011.77/57,980.33 = 31,382.95/x
  3. Step 3: Cross multiply
    42,011.77x = 57,980.33 × 31,382.95
  4. Step 4: Simplify right side
    42,011.77x = 1,819,593,797.37
  5. Step 5: Solve for x
    x = 1,819,593,797.37/42,011.77
  6. Step 6: Final answer
    x = 43,311.52

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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.