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Finding the Fourth Proportional to 72,724.10, 100,347.03 and 40,454.46

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Solution

The fourth proportional to 72,724.10, 100,347.03 and 40,454.46 is: 55,820.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,724.10 : 100,347.03 = 40,454.46 : x
  2. Step 2: Convert to fraction form
    72,724.10/100,347.03 = 40,454.46/x
  3. Step 3: Cross multiply
    72,724.10x = 100,347.03 × 40,454.46
  4. Step 4: Simplify right side
    72,724.10x = 4,059,484,911.25
  5. Step 5: Solve for x
    x = 4,059,484,911.25/72,724.10
  6. Step 6: Final answer
    x = 55,820.35

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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.