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Finding the Fourth Proportional to 207,020.81, 310,530.71 and 64,876.95

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Solution

The fourth proportional to 207,020.81, 310,530.71 and 64,876.95 is: 97,315.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,020.81 : 310,530.71 = 64,876.95 : x
  2. Step 2: Convert to fraction form
    207,020.81/310,530.71 = 64,876.95/x
  3. Step 3: Cross multiply
    207,020.81x = 310,530.71 × 64,876.95
  4. Step 4: Simplify right side
    207,020.81x = 20,146,285,508.33
  5. Step 5: Solve for x
    x = 20,146,285,508.33/207,020.81
  6. Step 6: Final answer
    x = 97,315.27

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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.