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Finding the Fourth Proportional to 85,178.88, 117,544.32 and 47,452.32

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Solution

The fourth proportional to 85,178.88, 117,544.32 and 47,452.32 is: 65,482.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,178.88 : 117,544.32 = 47,452.32 : x
  2. Step 2: Convert to fraction form
    85,178.88/117,544.32 = 47,452.32/x
  3. Step 3: Cross multiply
    85,178.88x = 117,544.32 × 47,452.32
  4. Step 4: Simplify right side
    85,178.88x = 5,577,750,686.82
  5. Step 5: Solve for x
    x = 5,577,750,686.82/85,178.88
  6. Step 6: Final answer
    x = 65,482.79

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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.