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Finding the Fourth Proportional to 72,454.10, 108,675.88 and 19,859.45

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Solution

The fourth proportional to 72,454.10, 108,675.88 and 19,859.45 is: 29,787.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,454.10 : 108,675.88 = 19,859.45 : x
  2. Step 2: Convert to fraction form
    72,454.10/108,675.88 = 19,859.45/x
  3. Step 3: Cross multiply
    72,454.10x = 108,675.88 × 19,859.45
  4. Step 4: Simplify right side
    72,454.10x = 2,158,242,612.04
  5. Step 5: Solve for x
    x = 2,158,242,612.04/72,454.10
  6. Step 6: Final answer
    x = 29,787.72

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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.