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Finding the Fourth Proportional to 98,471.53, 135,891.27 and 56,030.07

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Solution

The fourth proportional to 98,471.53, 135,891.27 and 56,030.07 is: 77,321.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,471.53 : 135,891.27 = 56,030.07 : x
  2. Step 2: Convert to fraction form
    98,471.53/135,891.27 = 56,030.07/x
  3. Step 3: Cross multiply
    98,471.53x = 135,891.27 × 56,030.07
  4. Step 4: Simplify right side
    98,471.53x = 7,613,997,370.49
  5. Step 5: Solve for x
    x = 7,613,997,370.49/98,471.53
  6. Step 6: Final answer
    x = 77,321.81

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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.