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Finding the Fourth Proportional to 72,573.84, 100,157.04 and 40,740.48

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Solution

The fourth proportional to 72,573.84, 100,157.04 and 40,740.48 is: 56,224.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,573.84 : 100,157.04 = 40,740.48 : x
  2. Step 2: Convert to fraction form
    72,573.84/100,157.04 = 40,740.48/x
  3. Step 3: Cross multiply
    72,573.84x = 100,157.04 × 40,740.48
  4. Step 4: Simplify right side
    72,573.84x = 4,080,445,884.98
  5. Step 5: Solve for x
    x = 4,080,445,884.98/72,573.84
  6. Step 6: Final answer
    x = 56,224.75

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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.