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Finding the Fourth Proportional to 78,765.98, 118,148.72 and 19,601.66

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Solution

The fourth proportional to 78,765.98, 118,148.72 and 19,601.66 is: 29,402.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,765.98 : 118,148.72 = 19,601.66 : x
  2. Step 2: Convert to fraction form
    78,765.98/118,148.72 = 19,601.66/x
  3. Step 3: Cross multiply
    78,765.98x = 118,148.72 × 19,601.66
  4. Step 4: Simplify right side
    78,765.98x = 2,315,911,236.24
  5. Step 5: Solve for x
    x = 2,315,911,236.24/78,765.98
  6. Step 6: Final answer
    x = 29,402.43

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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.