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Finding the Fourth Proportional to 72,447.32, 100,144.60 and 60,440.70

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Solution

The fourth proportional to 72,447.32, 100,144.60 and 60,440.70 is: 83,547.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,447.32 : 100,144.60 = 60,440.70 : x
  2. Step 2: Convert to fraction form
    72,447.32/100,144.60 = 60,440.70/x
  3. Step 3: Cross multiply
    72,447.32x = 100,144.60 × 60,440.70
  4. Step 4: Simplify right side
    72,447.32x = 6,052,809,725.22
  5. Step 5: Solve for x
    x = 6,052,809,725.22/72,447.32
  6. Step 6: Final answer
    x = 83,547.74

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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.