Home / 76,918.60-115,377.90-47,240.20

Finding the Fourth Proportional to 76,918.60, 115,377.90 and 47,240.20

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Solution

The fourth proportional to 76,918.60, 115,377.90 and 47,240.20 is: 70,860.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,918.60 : 115,377.90 = 47,240.20 : x
  2. Step 2: Convert to fraction form
    76,918.60/115,377.90 = 47,240.20/x
  3. Step 3: Cross multiply
    76,918.60x = 115,377.90 × 47,240.20
  4. Step 4: Simplify right side
    76,918.60x = 5,450,475,071.58
  5. Step 5: Solve for x
    x = 5,450,475,071.58/76,918.60
  6. Step 6: Final answer
    x = 70,860.30

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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.