Home / 45,227.20-67,840.80-31,230.40

Finding the Fourth Proportional to 45,227.20, 67,840.80 and 31,230.40

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Solution

The fourth proportional to 45,227.20, 67,840.80 and 31,230.40 is: 46,845.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,227.20 : 67,840.80 = 31,230.40 : x
  2. Step 2: Convert to fraction form
    45,227.20/67,840.80 = 31,230.40/x
  3. Step 3: Cross multiply
    45,227.20x = 67,840.80 × 31,230.40
  4. Step 4: Simplify right side
    45,227.20x = 2,118,695,320.32
  5. Step 5: Solve for x
    x = 2,118,695,320.32/45,227.20
  6. Step 6: Final answer
    x = 46,845.60

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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.