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Finding the Fourth Proportional to 98,873.31, 136,457.15 and 55,854.61

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Solution

The fourth proportional to 98,873.31, 136,457.15 and 55,854.61 is: 77,086.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,873.31 : 136,457.15 = 55,854.61 : x
  2. Step 2: Convert to fraction form
    98,873.31/136,457.15 = 55,854.61/x
  3. Step 3: Cross multiply
    98,873.31x = 136,457.15 × 55,854.61
  4. Step 4: Simplify right side
    98,873.31x = 7,621,760,894.96
  5. Step 5: Solve for x
    x = 7,621,760,894.96/98,873.31
  6. Step 6: Final answer
    x = 77,086.13

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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.