Home / 97,412.56-134,428.20-57,118

Finding the Fourth Proportional to 97,412.56, 134,428.20 and 57,118

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Solution

The fourth proportional to 97,412.56, 134,428.20 and 57,118 is: 78,822.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,412.56 : 134,428.20 = 57,118 : x
  2. Step 2: Convert to fraction form
    97,412.56/134,428.20 = 57,118/x
  3. Step 3: Cross multiply
    97,412.56x = 134,428.20 × 57,118
  4. Step 4: Simplify right side
    97,412.56x = 7,678,269,927.60
  5. Step 5: Solve for x
    x = 7,678,269,927.60/97,412.56
  6. Step 6: Final answer
    x = 78,822.18

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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.