Home / 78,209.64-117,312.84-19,045.62

Finding the Fourth Proportional to 78,209.64, 117,312.84 and 19,045.62

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Solution

The fourth proportional to 78,209.64, 117,312.84 and 19,045.62 is: 28,568.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,209.64 : 117,312.84 = 19,045.62 : x
  2. Step 2: Convert to fraction form
    78,209.64/117,312.84 = 19,045.62/x
  3. Step 3: Cross multiply
    78,209.64x = 117,312.84 × 19,045.62
  4. Step 4: Simplify right side
    78,209.64x = 2,234,295,771.76
  5. Step 5: Solve for x
    x = 2,234,295,771.76/78,209.64
  6. Step 6: Final answer
    x = 28,568.04

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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.