Home / 98,812.72-136,427.40-66,595.25

Finding the Fourth Proportional to 98,812.72, 136,427.40 and 66,595.25

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Solution

The fourth proportional to 98,812.72, 136,427.40 and 66,595.25 is: 91,945.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,812.72 : 136,427.40 = 66,595.25 : x
  2. Step 2: Convert to fraction form
    98,812.72/136,427.40 = 66,595.25/x
  3. Step 3: Cross multiply
    98,812.72x = 136,427.40 × 66,595.25
  4. Step 4: Simplify right side
    98,812.72x = 9,085,416,476.87
  5. Step 5: Solve for x
    x = 9,085,416,476.87/98,812.72
  6. Step 6: Final answer
    x = 91,945.82

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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.