Home / 53,421.42-80,061.36-28,407.61

Finding the Fourth Proportional to 53,421.42, 80,061.36 and 28,407.61

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Solution

The fourth proportional to 53,421.42, 80,061.36 and 28,407.61 is: 42,573.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,421.42 : 80,061.36 = 28,407.61 : x
  2. Step 2: Convert to fraction form
    53,421.42/80,061.36 = 28,407.61/x
  3. Step 3: Cross multiply
    53,421.42x = 80,061.36 × 28,407.61
  4. Step 4: Simplify right side
    53,421.42x = 2,274,352,044.29
  5. Step 5: Solve for x
    x = 2,274,352,044.29/53,421.42
  6. Step 6: Final answer
    x = 42,573.78

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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.