Home / 85,680.64-128,521.37-26,516.62

Finding the Fourth Proportional to 85,680.64, 128,521.37 and 26,516.62

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Solution

The fourth proportional to 85,680.64, 128,521.37 and 26,516.62 is: 39,775.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,680.64 : 128,521.37 = 26,516.62 : x
  2. Step 2: Convert to fraction form
    85,680.64/128,521.37 = 26,516.62/x
  3. Step 3: Cross multiply
    85,680.64x = 128,521.37 × 26,516.62
  4. Step 4: Simplify right side
    85,680.64x = 3,407,952,330.17
  5. Step 5: Solve for x
    x = 3,407,952,330.17/85,680.64
  6. Step 6: Final answer
    x = 39,775.06

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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.