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Finding the Fourth Proportional to 72,588.95, 100,177.74 and 40,327.46

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Solution

The fourth proportional to 72,588.95, 100,177.74 and 40,327.46 is: 55,654.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,588.95 : 100,177.74 = 40,327.46 : x
  2. Step 2: Convert to fraction form
    72,588.95/100,177.74 = 40,327.46/x
  3. Step 3: Cross multiply
    72,588.95x = 100,177.74 × 40,327.46
  4. Step 4: Simplify right side
    72,588.95x = 4,039,914,053.18
  5. Step 5: Solve for x
    x = 4,039,914,053.18/72,588.95
  6. Step 6: Final answer
    x = 55,654.67

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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.