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Finding the Fourth Proportional to 98,643.84, 136,095.82 and 55,617.94

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Solution

The fourth proportional to 98,643.84, 136,095.82 and 55,617.94 is: 76,734.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,643.84 : 136,095.82 = 55,617.94 : x
  2. Step 2: Convert to fraction form
    98,643.84/136,095.82 = 55,617.94/x
  3. Step 3: Cross multiply
    98,643.84x = 136,095.82 × 55,617.94
  4. Step 4: Simplify right side
    98,643.84x = 7,569,369,151.01
  5. Step 5: Solve for x
    x = 7,569,369,151.01/98,643.84
  6. Step 6: Final answer
    x = 76,734.33

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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.