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Finding the Fourth Proportional to 98,406.54, 147,614.46 and 31,851.88

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Solution

The fourth proportional to 98,406.54, 147,614.46 and 31,851.88 is: 47,779.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,406.54 : 147,614.46 = 31,851.88 : x
  2. Step 2: Convert to fraction form
    98,406.54/147,614.46 = 31,851.88/x
  3. Step 3: Cross multiply
    98,406.54x = 147,614.46 × 31,851.88
  4. Step 4: Simplify right side
    98,406.54x = 4,701,798,066.18
  5. Step 5: Solve for x
    x = 4,701,798,066.18/98,406.54
  6. Step 6: Final answer
    x = 47,779.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.