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Finding the Fourth Proportional to 78,763.74, 118,145.34 and 19,599.40

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Solution

The fourth proportional to 78,763.74, 118,145.34 and 19,599.40 is: 29,399.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,763.74 : 118,145.34 = 19,599.40 : x
  2. Step 2: Convert to fraction form
    78,763.74/118,145.34 = 19,599.40/x
  3. Step 3: Cross multiply
    78,763.74x = 118,145.34 × 19,599.40
  4. Step 4: Simplify right side
    78,763.74x = 2,315,577,776.80
  5. Step 5: Solve for x
    x = 2,315,577,776.80/78,763.74
  6. Step 6: Final answer
    x = 29,399.03

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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.