Home / 98,731.89-136,249.59-53,409.76

Finding the Fourth Proportional to 98,731.89, 136,249.59 and 53,409.76

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Solution

The fourth proportional to 98,731.89, 136,249.59 and 53,409.76 is: 73,705.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,731.89 : 136,249.59 = 53,409.76 : x
  2. Step 2: Convert to fraction form
    98,731.89/136,249.59 = 53,409.76/x
  3. Step 3: Cross multiply
    98,731.89x = 136,249.59 × 53,409.76
  4. Step 4: Simplify right side
    98,731.89x = 7,277,057,457.82
  5. Step 5: Solve for x
    x = 7,277,057,457.82/98,731.89
  6. Step 6: Final answer
    x = 73,705.24

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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.