Home / 101,039.02-139,430.62-55,717.84

Finding the Fourth Proportional to 101,039.02, 139,430.62 and 55,717.84

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Solution

The fourth proportional to 101,039.02, 139,430.62 and 55,717.84 is: 76,888.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,039.02 : 139,430.62 = 55,717.84 : x
  2. Step 2: Convert to fraction form
    101,039.02/139,430.62 = 55,717.84/x
  3. Step 3: Cross multiply
    101,039.02x = 139,430.62 × 55,717.84
  4. Step 4: Simplify right side
    101,039.02x = 7,768,772,976.26
  5. Step 5: Solve for x
    x = 7,768,772,976.26/101,039.02
  6. Step 6: Final answer
    x = 76,888.84

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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.