Home / 85,719.52-118,292.16-47,994.40

Finding the Fourth Proportional to 85,719.52, 118,292.16 and 47,994.40

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Solution

The fourth proportional to 85,719.52, 118,292.16 and 47,994.40 is: 66,231.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,719.52 : 118,292.16 = 47,994.40 : x
  2. Step 2: Convert to fraction form
    85,719.52/118,292.16 = 47,994.40/x
  3. Step 3: Cross multiply
    85,719.52x = 118,292.16 × 47,994.40
  4. Step 4: Simplify right side
    85,719.52x = 5,677,361,243.90
  5. Step 5: Solve for x
    x = 5,677,361,243.90/85,719.52
  6. Step 6: Final answer
    x = 66,231.84

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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.