Home / 78,322.96-117,306.14-61,350.02

Finding the Fourth Proportional to 78,322.96, 117,306.14 and 61,350.02

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Solution

The fourth proportional to 78,322.96, 117,306.14 and 61,350.02 is: 91,885.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,322.96 : 117,306.14 = 61,350.02 : x
  2. Step 2: Convert to fraction form
    78,322.96/117,306.14 = 61,350.02/x
  3. Step 3: Cross multiply
    78,322.96x = 117,306.14 × 61,350.02
  4. Step 4: Simplify right side
    78,322.96x = 7,196,733,728.37
  5. Step 5: Solve for x
    x = 7,196,733,728.37/78,322.96
  6. Step 6: Final answer
    x = 91,885.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.