Home / 101,720.77-140,374.70-56,399.29

Finding the Fourth Proportional to 101,720.77, 140,374.70 and 56,399.29

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Solution

The fourth proportional to 101,720.77, 140,374.70 and 56,399.29 is: 77,831.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,720.77 : 140,374.70 = 56,399.29 : x
  2. Step 2: Convert to fraction form
    101,720.77/140,374.70 = 56,399.29/x
  3. Step 3: Cross multiply
    101,720.77x = 140,374.70 × 56,399.29
  4. Step 4: Simplify right side
    101,720.77x = 7,917,033,413.96
  5. Step 5: Solve for x
    x = 7,917,033,413.96/101,720.77
  6. Step 6: Final answer
    x = 77,831.04

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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.