Home / 76,976.60-115,464.90-47,298.20

Finding the Fourth Proportional to 76,976.60, 115,464.90 and 47,298.20

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Solution

The fourth proportional to 76,976.60, 115,464.90 and 47,298.20 is: 70,947.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,976.60 : 115,464.90 = 47,298.20 : x
  2. Step 2: Convert to fraction form
    76,976.60/115,464.90 = 47,298.20/x
  3. Step 3: Cross multiply
    76,976.60x = 115,464.90 × 47,298.20
  4. Step 4: Simplify right side
    76,976.60x = 5,461,281,933.18
  5. Step 5: Solve for x
    x = 5,461,281,933.18/76,976.60
  6. Step 6: Final answer
    x = 70,947.30

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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.