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Finding the Fourth Proportional to 72,574.76, 100,152.42 and 40,742.92

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Solution

The fourth proportional to 72,574.76, 100,152.42 and 40,742.92 is: 56,224.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,574.76 : 100,152.42 = 40,742.92 : x
  2. Step 2: Convert to fraction form
    72,574.76/100,152.42 = 40,742.92/x
  3. Step 3: Cross multiply
    72,574.76x = 100,152.42 × 40,742.92
  4. Step 4: Simplify right side
    72,574.76x = 4,080,502,035.87
  5. Step 5: Solve for x
    x = 4,080,502,035.87/72,574.76
  6. Step 6: Final answer
    x = 56,224.81

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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.