Home / 77,030.10-115,561.35-43,722.90

Finding the Fourth Proportional to 77,030.10, 115,561.35 and 43,722.90

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Solution

The fourth proportional to 77,030.10, 115,561.35 and 43,722.90 is: 65,593.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,030.10 : 115,561.35 = 43,722.90 : x
  2. Step 2: Convert to fraction form
    77,030.10/115,561.35 = 43,722.90/x
  3. Step 3: Cross multiply
    77,030.10x = 115,561.35 × 43,722.90
  4. Step 4: Simplify right side
    77,030.10x = 5,052,677,349.92
  5. Step 5: Solve for x
    x = 5,052,677,349.92/77,030.10
  6. Step 6: Final answer
    x = 65,593.55

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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.