Home / 69,106.95-103,121.25-61,660.20

Finding the Fourth Proportional to 69,106.95, 103,121.25 and 61,660.20

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Solution

The fourth proportional to 69,106.95, 103,121.25 and 61,660.20 is: 92,009.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,106.95 : 103,121.25 = 61,660.20 : x
  2. Step 2: Convert to fraction form
    69,106.95/103,121.25 = 61,660.20/x
  3. Step 3: Cross multiply
    69,106.95x = 103,121.25 × 61,660.20
  4. Step 4: Simplify right side
    69,106.95x = 6,358,476,899.25
  5. Step 5: Solve for x
    x = 6,358,476,899.25/69,106.95
  6. Step 6: Final answer
    x = 92,009.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.