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Finding the Fourth Proportional to 77,903.58, 107,507.43 and 59,007.90

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Solution

The fourth proportional to 77,903.58, 107,507.43 and 59,007.90 is: 81,431.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,903.58 : 107,507.43 = 59,007.90 : x
  2. Step 2: Convert to fraction form
    77,903.58/107,507.43 = 59,007.90/x
  3. Step 3: Cross multiply
    77,903.58x = 107,507.43 × 59,007.90
  4. Step 4: Simplify right side
    77,903.58x = 6,343,787,678.70
  5. Step 5: Solve for x
    x = 6,343,787,678.70/77,903.58
  6. Step 6: Final answer
    x = 81,431.27

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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.