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Finding the Fourth Proportional to 55,989,791.60, 83,972,083.80 and 20,087,999.60

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Solution

The fourth proportional to 55,989,791.60, 83,972,083.80 and 20,087,999.60 is: 30,127,477.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,989,791.60 : 83,972,083.80 = 20,087,999.60 : x
  2. Step 2: Convert to fraction form
    55,989,791.60/83,972,083.80 = 20,087,999.60/x
  3. Step 3: Cross multiply
    55,989,791.60x = 83,972,083.80 × 20,087,999.60
  4. Step 4: Simplify right side
    55,989,791.60x = 1,686,831,185,785,566.50
  5. Step 5: Solve for x
    x = 1,686,831,185,785,566.50/55,989,791.60
  6. Step 6: Final answer
    x = 30,127,477.48

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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.