Home / 72,918.08-100,632.22-40,654.88

Finding the Fourth Proportional to 72,918.08, 100,632.22 and 40,654.88

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Solution

The fourth proportional to 72,918.08, 100,632.22 and 40,654.88 is: 56,106.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,918.08 : 100,632.22 = 40,654.88 : x
  2. Step 2: Convert to fraction form
    72,918.08/100,632.22 = 40,654.88/x
  3. Step 3: Cross multiply
    72,918.08x = 100,632.22 × 40,654.88
  4. Step 4: Simplify right side
    72,918.08x = 4,091,190,828.23
  5. Step 5: Solve for x
    x = 4,091,190,828.23/72,918.08
  6. Step 6: Final answer
    x = 56,106.67

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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.