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Finding the Fourth Proportional to 104,420.64, 156,630 and 25,535.20

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Solution

The fourth proportional to 104,420.64, 156,630 and 25,535.20 is: 38,302.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,420.64 : 156,630 = 25,535.20 : x
  2. Step 2: Convert to fraction form
    104,420.64/156,630 = 25,535.20/x
  3. Step 3: Cross multiply
    104,420.64x = 156,630 × 25,535.20
  4. Step 4: Simplify right side
    104,420.64x = 3,999,578,376
  5. Step 5: Solve for x
    x = 3,999,578,376/104,420.64
  6. Step 6: Final answer
    x = 38,302.57

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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.