Home / 84,895.20-117,122.64-64,731.20

Finding the Fourth Proportional to 84,895.20, 117,122.64 and 64,731.20

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Solution

The fourth proportional to 84,895.20, 117,122.64 and 64,731.20 is: 89,304.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,895.20 : 117,122.64 = 64,731.20 : x
  2. Step 2: Convert to fraction form
    84,895.20/117,122.64 = 64,731.20/x
  3. Step 3: Cross multiply
    84,895.20x = 117,122.64 × 64,731.20
  4. Step 4: Simplify right side
    84,895.20x = 7,581,489,034.37
  5. Step 5: Solve for x
    x = 7,581,489,034.37/84,895.20
  6. Step 6: Final answer
    x = 89,304.10

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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.