Home / 78,421.64-117,652.30-34,037.64

Finding the Fourth Proportional to 78,421.64, 117,652.30 and 34,037.64

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Solution

The fourth proportional to 78,421.64, 117,652.30 and 34,037.64 is: 51,065.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,421.64 : 117,652.30 = 34,037.64 : x
  2. Step 2: Convert to fraction form
    78,421.64/117,652.30 = 34,037.64/x
  3. Step 3: Cross multiply
    78,421.64x = 117,652.30 × 34,037.64
  4. Step 4: Simplify right side
    78,421.64x = 4,004,606,632.57
  5. Step 5: Solve for x
    x = 4,004,606,632.57/78,421.64
  6. Step 6: Final answer
    x = 51,065.07

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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.