Home / 98,839.64-136,388.52-56,390

Finding the Fourth Proportional to 98,839.64, 136,388.52 and 56,390

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Solution

The fourth proportional to 98,839.64, 136,388.52 and 56,390 is: 77,812.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,839.64 : 136,388.52 = 56,390 : x
  2. Step 2: Convert to fraction form
    98,839.64/136,388.52 = 56,390/x
  3. Step 3: Cross multiply
    98,839.64x = 136,388.52 × 56,390
  4. Step 4: Simplify right side
    98,839.64x = 7,690,948,642.80
  5. Step 5: Solve for x
    x = 7,690,948,642.80/98,839.64
  6. Step 6: Final answer
    x = 77,812.39

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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.