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Finding the Fourth Proportional to 84,570.67, 126,851.65 and 28,411.24

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Solution

The fourth proportional to 84,570.67, 126,851.65 and 28,411.24 is: 42,615.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,570.67 : 126,851.65 = 28,411.24 : x
  2. Step 2: Convert to fraction form
    84,570.67/126,851.65 = 28,411.24/x
  3. Step 3: Cross multiply
    84,570.67x = 126,851.65 × 28,411.24
  4. Step 4: Simplify right side
    84,570.67x = 3,604,012,672.55
  5. Step 5: Solve for x
    x = 3,604,012,672.55/84,570.67
  6. Step 6: Final answer
    x = 42,615.40

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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.