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Finding the Fourth Proportional to 98,943.75, 148,415.63 and 43,539.75

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Solution

The fourth proportional to 98,943.75, 148,415.63 and 43,539.75 is: 65,309.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,943.75 : 148,415.63 = 43,539.75 : x
  2. Step 2: Convert to fraction form
    98,943.75/148,415.63 = 43,539.75/x
  3. Step 3: Cross multiply
    98,943.75x = 148,415.63 × 43,539.75
  4. Step 4: Simplify right side
    98,943.75x = 6,461,979,208.59
  5. Step 5: Solve for x
    x = 6,461,979,208.59/98,943.75
  6. Step 6: Final answer
    x = 65,309.63

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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.