Home / 84,919.12-127,378.69-38,117.32

Finding the Fourth Proportional to 84,919.12, 127,378.69 and 38,117.32

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Solution

The fourth proportional to 84,919.12, 127,378.69 and 38,117.32 is: 57,175.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,919.12 : 127,378.69 = 38,117.32 : x
  2. Step 2: Convert to fraction form
    84,919.12/127,378.69 = 38,117.32/x
  3. Step 3: Cross multiply
    84,919.12x = 127,378.69 × 38,117.32
  4. Step 4: Simplify right side
    84,919.12x = 4,855,333,874.17
  5. Step 5: Solve for x
    x = 4,855,333,874.17/84,919.12
  6. Step 6: Final answer
    x = 57,175.98

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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.