Home / 78,213.39-117,320.28-19,048.96

Finding the Fourth Proportional to 78,213.39, 117,320.28 and 19,048.96

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Solution

The fourth proportional to 78,213.39, 117,320.28 and 19,048.96 is: 28,573.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,213.39 : 117,320.28 = 19,048.96 : x
  2. Step 2: Convert to fraction form
    78,213.39/117,320.28 = 19,048.96/x
  3. Step 3: Cross multiply
    78,213.39x = 117,320.28 × 19,048.96
  4. Step 4: Simplify right side
    78,213.39x = 2,234,829,320.91
  5. Step 5: Solve for x
    x = 2,234,829,320.91/78,213.39
  6. Step 6: Final answer
    x = 28,573.49

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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.