Home / 76,905.60-115,339.20-29,510.40

Finding the Fourth Proportional to 76,905.60, 115,339.20 and 29,510.40

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Solution

The fourth proportional to 76,905.60, 115,339.20 and 29,510.40 is: 44,258.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,905.60 : 115,339.20 = 29,510.40 : x
  2. Step 2: Convert to fraction form
    76,905.60/115,339.20 = 29,510.40/x
  3. Step 3: Cross multiply
    76,905.60x = 115,339.20 × 29,510.40
  4. Step 4: Simplify right side
    76,905.60x = 3,403,705,927.68
  5. Step 5: Solve for x
    x = 3,403,705,927.68/76,905.60
  6. Step 6: Final answer
    x = 44,258.23

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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.