Home / 97,990.25-135,222.63-57,705.71

Finding the Fourth Proportional to 97,990.25, 135,222.63 and 57,705.71

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Solution

The fourth proportional to 97,990.25, 135,222.63 and 57,705.71 is: 79,631.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,990.25 : 135,222.63 = 57,705.71 : x
  2. Step 2: Convert to fraction form
    97,990.25/135,222.63 = 57,705.71/x
  3. Step 3: Cross multiply
    97,990.25x = 135,222.63 × 57,705.71
  4. Step 4: Simplify right side
    97,990.25x = 7,803,117,872.22
  5. Step 5: Solve for x
    x = 7,803,117,872.22/97,990.25
  6. Step 6: Final answer
    x = 79,631.57

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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.