Home / 77,405.61-106,720.87-50,133.51

Finding the Fourth Proportional to 77,405.61, 106,720.87 and 50,133.51

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Solution

The fourth proportional to 77,405.61, 106,720.87 and 50,133.51 is: 69,120.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,405.61 : 106,720.87 = 50,133.51 : x
  2. Step 2: Convert to fraction form
    77,405.61/106,720.87 = 50,133.51/x
  3. Step 3: Cross multiply
    77,405.61x = 106,720.87 × 50,133.51
  4. Step 4: Simplify right side
    77,405.61x = 5,350,291,803.35
  5. Step 5: Solve for x
    x = 5,350,291,803.35/77,405.61
  6. Step 6: Final answer
    x = 69,120.21

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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.