Home / 90,386.87-124,729.31-50,100.21

Finding the Fourth Proportional to 90,386.87, 124,729.31 and 50,100.21

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Solution

The fourth proportional to 90,386.87, 124,729.31 and 50,100.21 is: 69,135.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,386.87 : 124,729.31 = 50,100.21 : x
  2. Step 2: Convert to fraction form
    90,386.87/124,729.31 = 50,100.21/x
  3. Step 3: Cross multiply
    90,386.87x = 124,729.31 × 50,100.21
  4. Step 4: Simplify right side
    90,386.87x = 6,248,964,373.65
  5. Step 5: Solve for x
    x = 6,248,964,373.65/90,386.87
  6. Step 6: Final answer
    x = 69,135.76

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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.