Home / 90,689.75-136,037.06-28,360.25

Finding the Fourth Proportional to 90,689.75, 136,037.06 and 28,360.25

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Solution

The fourth proportional to 90,689.75, 136,037.06 and 28,360.25 is: 42,541.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,689.75 : 136,037.06 = 28,360.25 : x
  2. Step 2: Convert to fraction form
    90,689.75/136,037.06 = 28,360.25/x
  3. Step 3: Cross multiply
    90,689.75x = 136,037.06 × 28,360.25
  4. Step 4: Simplify right side
    90,689.75x = 3,858,045,030.87
  5. Step 5: Solve for x
    x = 3,858,045,030.87/90,689.75
  6. Step 6: Final answer
    x = 42,541.14

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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.