Home / 72,583.68-100,140.48-40,748.16

Finding the Fourth Proportional to 72,583.68, 100,140.48 and 40,748.16

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Solution

The fourth proportional to 72,583.68, 100,140.48 and 40,748.16 is: 56,218.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,583.68 : 100,140.48 = 40,748.16 : x
  2. Step 2: Convert to fraction form
    72,583.68/100,140.48 = 40,748.16/x
  3. Step 3: Cross multiply
    72,583.68x = 100,140.48 × 40,748.16
  4. Step 4: Simplify right side
    72,583.68x = 4,080,540,301.52
  5. Step 5: Solve for x
    x = 4,080,540,301.52/72,583.68
  6. Step 6: Final answer
    x = 56,218.43

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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.