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Finding the Fourth Proportional to 72,570.49, 108,854.60 and 51,134.58

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Solution

The fourth proportional to 72,570.49, 108,854.60 and 51,134.58 is: 76,701.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,570.49 : 108,854.60 = 51,134.58 : x
  2. Step 2: Convert to fraction form
    72,570.49/108,854.60 = 51,134.58/x
  3. Step 3: Cross multiply
    72,570.49x = 108,854.60 × 51,134.58
  4. Step 4: Simplify right side
    72,570.49x = 5,566,234,252.07
  5. Step 5: Solve for x
    x = 5,566,234,252.07/72,570.49
  6. Step 6: Final answer
    x = 76,701.07

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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.