Home / 85,453.08-128,158.02-25,467.72

Finding the Fourth Proportional to 85,453.08, 128,158.02 and 25,467.72

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Solution

The fourth proportional to 85,453.08, 128,158.02 and 25,467.72 is: 38,195.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,453.08 : 128,158.02 = 25,467.72 : x
  2. Step 2: Convert to fraction form
    85,453.08/128,158.02 = 25,467.72/x
  3. Step 3: Cross multiply
    85,453.08x = 128,158.02 × 25,467.72
  4. Step 4: Simplify right side
    85,453.08x = 3,263,892,569.11
  5. Step 5: Solve for x
    x = 3,263,892,569.11/85,453.08
  6. Step 6: Final answer
    x = 38,195.14

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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.