Home / 72,723.10-100,345.65-40,453.46

Finding the Fourth Proportional to 72,723.10, 100,345.65 and 40,453.46

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Solution

The fourth proportional to 72,723.10, 100,345.65 and 40,453.46 is: 55,818.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,723.10 : 100,345.65 = 40,453.46 : x
  2. Step 2: Convert to fraction form
    72,723.10/100,345.65 = 40,453.46/x
  3. Step 3: Cross multiply
    72,723.10x = 100,345.65 × 40,453.46
  4. Step 4: Simplify right side
    72,723.10x = 4,059,328,649.46
  5. Step 5: Solve for x
    x = 4,059,328,649.46/72,723.10
  6. Step 6: Final answer
    x = 55,818.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.