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Finding the Fourth Proportional to 78,301.47, 108,102.44 and 51,490.22

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Solution

The fourth proportional to 78,301.47, 108,102.44 and 51,490.22 is: 71,087.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,301.47 : 108,102.44 = 51,490.22 : x
  2. Step 2: Convert to fraction form
    78,301.47/108,102.44 = 51,490.22/x
  3. Step 3: Cross multiply
    78,301.47x = 108,102.44 × 51,490.22
  4. Step 4: Simplify right side
    78,301.47x = 5,566,217,890.43
  5. Step 5: Solve for x
    x = 5,566,217,890.43/78,301.47
  6. Step 6: Final answer
    x = 71,087.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.