Home / 85,138.42-117,482.61-47,416.18

Finding the Fourth Proportional to 85,138.42, 117,482.61 and 47,416.18

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Solution

The fourth proportional to 85,138.42, 117,482.61 and 47,416.18 is: 65,429.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,138.42 : 117,482.61 = 47,416.18 : x
  2. Step 2: Convert to fraction form
    85,138.42/117,482.61 = 47,416.18/x
  3. Step 3: Cross multiply
    85,138.42x = 117,482.61 × 47,416.18
  4. Step 4: Simplify right side
    85,138.42x = 5,570,576,582.63
  5. Step 5: Solve for x
    x = 5,570,576,582.63/85,138.42
  6. Step 6: Final answer
    x = 65,429.64

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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.