Home / 85,848.18-118,470.78-48,120

Finding the Fourth Proportional to 85,848.18, 118,470.78 and 48,120

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Solution

The fourth proportional to 85,848.18, 118,470.78 and 48,120 is: 66,405.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,848.18 : 118,470.78 = 48,120 : x
  2. Step 2: Convert to fraction form
    85,848.18/118,470.78 = 48,120/x
  3. Step 3: Cross multiply
    85,848.18x = 118,470.78 × 48,120
  4. Step 4: Simplify right side
    85,848.18x = 5,700,813,933.60
  5. Step 5: Solve for x
    x = 5,700,813,933.60/85,848.18
  6. Step 6: Final answer
    x = 66,405.76

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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.