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Finding the Fourth Proportional to 86,880.88, 130,318.60 and 27,720.08

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Solution

The fourth proportional to 86,880.88, 130,318.60 and 27,720.08 is: 41,579.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,880.88 : 130,318.60 = 27,720.08 : x
  2. Step 2: Convert to fraction form
    86,880.88/130,318.60 = 27,720.08/x
  3. Step 3: Cross multiply
    86,880.88x = 130,318.60 × 27,720.08
  4. Step 4: Simplify right side
    86,880.88x = 3,612,442,017.49
  5. Step 5: Solve for x
    x = 3,612,442,017.49/86,880.88
  6. Step 6: Final answer
    x = 41,579.25

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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.