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Finding the Fourth Proportional to 61,603.56, 91,959.71 and 54,130.19

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Solution

The fourth proportional to 61,603.56, 91,959.71 and 54,130.19 is: 80,803.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,603.56 : 91,959.71 = 54,130.19 : x
  2. Step 2: Convert to fraction form
    61,603.56/91,959.71 = 54,130.19/x
  3. Step 3: Cross multiply
    61,603.56x = 91,959.71 × 54,130.19
  4. Step 4: Simplify right side
    61,603.56x = 4,977,795,844.20
  5. Step 5: Solve for x
    x = 4,977,795,844.20/61,603.56
  6. Step 6: Final answer
    x = 80,803.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.