Home / 85,278.32-117,716.52-64,119.08

Finding the Fourth Proportional to 85,278.32, 117,716.52 and 64,119.08

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Solution

The fourth proportional to 85,278.32, 117,716.52 and 64,119.08 is: 88,508.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,278.32 : 117,716.52 = 64,119.08 : x
  2. Step 2: Convert to fraction form
    85,278.32/117,716.52 = 64,119.08/x
  3. Step 3: Cross multiply
    85,278.32x = 117,716.52 × 64,119.08
  4. Step 4: Simplify right side
    85,278.32x = 7,547,874,963.20
  5. Step 5: Solve for x
    x = 7,547,874,963.20/85,278.32
  6. Step 6: Final answer
    x = 88,508.72

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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.