Home / 77,720.31-107,251.70-43,730.69

Finding the Fourth Proportional to 77,720.31, 107,251.70 and 43,730.69

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Solution

The fourth proportional to 77,720.31, 107,251.70 and 43,730.69 is: 60,347.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,720.31 : 107,251.70 = 43,730.69 : x
  2. Step 2: Convert to fraction form
    77,720.31/107,251.70 = 43,730.69/x
  3. Step 3: Cross multiply
    77,720.31x = 107,251.70 × 43,730.69
  4. Step 4: Simplify right side
    77,720.31x = 4,690,190,089.76
  5. Step 5: Solve for x
    x = 4,690,190,089.76/77,720.31
  6. Step 6: Final answer
    x = 60,347.03

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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.