Home / 98,819.28-136,383.48-56,386.08

Finding the Fourth Proportional to 98,819.28, 136,383.48 and 56,386.08

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Solution

The fourth proportional to 98,819.28, 136,383.48 and 56,386.08 is: 77,820.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,819.28 : 136,383.48 = 56,386.08 : x
  2. Step 2: Convert to fraction form
    98,819.28/136,383.48 = 56,386.08/x
  3. Step 3: Cross multiply
    98,819.28x = 136,383.48 × 56,386.08
  4. Step 4: Simplify right side
    98,819.28x = 7,690,129,813.96
  5. Step 5: Solve for x
    x = 7,690,129,813.96/98,819.28
  6. Step 6: Final answer
    x = 77,820.14

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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.