Home / 78,011.08-116,991.06-25,407.88

Finding the Fourth Proportional to 78,011.08, 116,991.06 and 25,407.88

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Solution

The fourth proportional to 78,011.08, 116,991.06 and 25,407.88 is: 38,103.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,011.08 : 116,991.06 = 25,407.88 : x
  2. Step 2: Convert to fraction form
    78,011.08/116,991.06 = 25,407.88/x
  3. Step 3: Cross multiply
    78,011.08x = 116,991.06 × 25,407.88
  4. Step 4: Simplify right side
    78,011.08x = 2,972,494,813.55
  5. Step 5: Solve for x
    x = 2,972,494,813.55/78,011.08
  6. Step 6: Final answer
    x = 38,103.50

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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.