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Finding the Fourth Proportional to 78,870.31, 108,800.52 and 52,003.01

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Solution

The fourth proportional to 78,870.31, 108,800.52 and 52,003.01 is: 71,737.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,870.31 : 108,800.52 = 52,003.01 : x
  2. Step 2: Convert to fraction form
    78,870.31/108,800.52 = 52,003.01/x
  3. Step 3: Cross multiply
    78,870.31x = 108,800.52 × 52,003.01
  4. Step 4: Simplify right side
    78,870.31x = 5,657,954,606.56
  5. Step 5: Solve for x
    x = 5,657,954,606.56/78,870.31
  6. Step 6: Final answer
    x = 71,737.45

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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.