Home / 98,784.66-136,321.44-56,343.90

Finding the Fourth Proportional to 98,784.66, 136,321.44 and 56,343.90

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Solution

The fourth proportional to 98,784.66, 136,321.44 and 56,343.90 is: 77,753.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,784.66 : 136,321.44 = 56,343.90 : x
  2. Step 2: Convert to fraction form
    98,784.66/136,321.44 = 56,343.90/x
  3. Step 3: Cross multiply
    98,784.66x = 136,321.44 × 56,343.90
  4. Step 4: Simplify right side
    98,784.66x = 7,680,881,583.22
  5. Step 5: Solve for x
    x = 7,680,881,583.22/98,784.66
  6. Step 6: Final answer
    x = 77,753.79

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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.