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Finding the Fourth Proportional to 85,497.71, 128,253.01 and 25,521.45

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Solution

The fourth proportional to 85,497.71, 128,253.01 and 25,521.45 is: 38,284.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,497.71 : 128,253.01 = 25,521.45 : x
  2. Step 2: Convert to fraction form
    85,497.71/128,253.01 = 25,521.45/x
  3. Step 3: Cross multiply
    85,497.71x = 128,253.01 × 25,521.45
  4. Step 4: Simplify right side
    85,497.71x = 3,273,202,461.43
  5. Step 5: Solve for x
    x = 3,273,202,461.43/85,497.71
  6. Step 6: Final answer
    x = 38,284.09

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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.