Home / 47,187.20-70,780.80-45,113.60

Finding the Fourth Proportional to 47,187.20, 70,780.80 and 45,113.60

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Solution

The fourth proportional to 47,187.20, 70,780.80 and 45,113.60 is: 67,670.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,187.20 : 70,780.80 = 45,113.60 : x
  2. Step 2: Convert to fraction form
    47,187.20/70,780.80 = 45,113.60/x
  3. Step 3: Cross multiply
    47,187.20x = 70,780.80 × 45,113.60
  4. Step 4: Simplify right side
    47,187.20x = 3,193,176,698.88
  5. Step 5: Solve for x
    x = 3,193,176,698.88/47,187.20
  6. Step 6: Final answer
    x = 67,670.40

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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.