Home / 98,895.20-136,499.78-56,478.33

Finding the Fourth Proportional to 98,895.20, 136,499.78 and 56,478.33

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Solution

The fourth proportional to 98,895.20, 136,499.78 and 56,478.33 is: 77,954.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,895.20 : 136,499.78 = 56,478.33 : x
  2. Step 2: Convert to fraction form
    98,895.20/136,499.78 = 56,478.33/x
  3. Step 3: Cross multiply
    98,895.20x = 136,499.78 × 56,478.33
  4. Step 4: Simplify right side
    98,895.20x = 7,709,279,760.96
  5. Step 5: Solve for x
    x = 7,709,279,760.96/98,895.20
  6. Step 6: Final answer
    x = 77,954.04

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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.