Home / 84,689.28-127,015.38-34,720.20

Finding the Fourth Proportional to 84,689.28, 127,015.38 and 34,720.20

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Solution

The fourth proportional to 84,689.28, 127,015.38 and 34,720.20 is: 52,072.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,689.28 : 127,015.38 = 34,720.20 : x
  2. Step 2: Convert to fraction form
    84,689.28/127,015.38 = 34,720.20/x
  3. Step 3: Cross multiply
    84,689.28x = 127,015.38 × 34,720.20
  4. Step 4: Simplify right side
    84,689.28x = 4,409,999,396.68
  5. Step 5: Solve for x
    x = 4,409,999,396.68/84,689.28
  6. Step 6: Final answer
    x = 52,072.70

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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.