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Finding the Fourth Proportional to 72,705.60, 109,058.04 and 19,397.52

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Solution

The fourth proportional to 72,705.60, 109,058.04 and 19,397.52 is: 29,096.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,705.60 : 109,058.04 = 19,397.52 : x
  2. Step 2: Convert to fraction form
    72,705.60/109,058.04 = 19,397.52/x
  3. Step 3: Cross multiply
    72,705.60x = 109,058.04 × 19,397.52
  4. Step 4: Simplify right side
    72,705.60x = 2,115,455,512.06
  5. Step 5: Solve for x
    x = 2,115,455,512.06/72,705.60
  6. Step 6: Final answer
    x = 29,096.18

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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.