Home / 43,219.50-64,840.20-12,054.78

Finding the Fourth Proportional to 43,219.50, 64,840.20 and 12,054.78

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Solution

The fourth proportional to 43,219.50, 64,840.20 and 12,054.78 is: 18,085.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,219.50 : 64,840.20 = 12,054.78 : x
  2. Step 2: Convert to fraction form
    43,219.50/64,840.20 = 12,054.78/x
  3. Step 3: Cross multiply
    43,219.50x = 64,840.20 × 12,054.78
  4. Step 4: Simplify right side
    43,219.50x = 781,634,346.16
  5. Step 5: Solve for x
    x = 781,634,346.16/43,219.50
  6. Step 6: Final answer
    x = 18,085.22

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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.