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Finding the Fourth Proportional to 72,607.68, 100,132.02 and 47,087.46

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Solution

The fourth proportional to 72,607.68, 100,132.02 and 47,087.46 is: 64,937.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,607.68 : 100,132.02 = 47,087.46 : x
  2. Step 2: Convert to fraction form
    72,607.68/100,132.02 = 47,087.46/x
  3. Step 3: Cross multiply
    72,607.68x = 100,132.02 × 47,087.46
  4. Step 4: Simplify right side
    72,607.68x = 4,714,962,486.47
  5. Step 5: Solve for x
    x = 4,714,962,486.47/72,607.68
  6. Step 6: Final answer
    x = 64,937.52

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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.