Home / 78,416.20-117,624.30-25,827.40

Finding the Fourth Proportional to 78,416.20, 117,624.30 and 25,827.40

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Solution

The fourth proportional to 78,416.20, 117,624.30 and 25,827.40 is: 38,741.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,416.20 : 117,624.30 = 25,827.40 : x
  2. Step 2: Convert to fraction form
    78,416.20/117,624.30 = 25,827.40/x
  3. Step 3: Cross multiply
    78,416.20x = 117,624.30 × 25,827.40
  4. Step 4: Simplify right side
    78,416.20x = 3,037,929,845.82
  5. Step 5: Solve for x
    x = 3,037,929,845.82/78,416.20
  6. Step 6: Final answer
    x = 38,741.10

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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.