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Finding the Fourth Proportional to 56,020, 84,044.40 and 20,960.08

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Solution

The fourth proportional to 56,020, 84,044.40 and 20,960.08 is: 31,445.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,020 : 84,044.40 = 20,960.08 : x
  2. Step 2: Convert to fraction form
    56,020/84,044.40 = 20,960.08/x
  3. Step 3: Cross multiply
    56,020x = 84,044.40 × 20,960.08
  4. Step 4: Simplify right side
    56,020x = 1,761,577,347.55
  5. Step 5: Solve for x
    x = 1,761,577,347.55/56,020
  6. Step 6: Final answer
    x = 31,445.51

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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.