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Finding the Fourth Proportional to 72,547.25, 108,848.21 and 28,176.66

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Solution

The fourth proportional to 72,547.25, 108,848.21 and 28,176.66 is: 42,275.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,547.25 : 108,848.21 = 28,176.66 : x
  2. Step 2: Convert to fraction form
    72,547.25/108,848.21 = 28,176.66/x
  3. Step 3: Cross multiply
    72,547.25x = 108,848.21 × 28,176.66
  4. Step 4: Simplify right side
    72,547.25x = 3,066,978,863.90
  5. Step 5: Solve for x
    x = 3,066,978,863.90/72,547.25
  6. Step 6: Final answer
    x = 42,275.61

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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.