Home / 78,216.01-117,345.88-25,662.40

Finding the Fourth Proportional to 78,216.01, 117,345.88 and 25,662.40

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Solution

The fourth proportional to 78,216.01, 117,345.88 and 25,662.40 is: 38,500.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,216.01 : 117,345.88 = 25,662.40 : x
  2. Step 2: Convert to fraction form
    78,216.01/117,345.88 = 25,662.40/x
  3. Step 3: Cross multiply
    78,216.01x = 117,345.88 × 25,662.40
  4. Step 4: Simplify right side
    78,216.01x = 3,011,376,910.91
  5. Step 5: Solve for x
    x = 3,011,376,910.91/78,216.01
  6. Step 6: Final answer
    x = 38,500.77

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1.5x scale

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.