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Finding the Fourth Proportional to 69,009.60, 103,514.40 and 31,569.60

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Solution

The fourth proportional to 69,009.60, 103,514.40 and 31,569.60 is: 47,354.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,009.60 : 103,514.40 = 31,569.60 : x
  2. Step 2: Convert to fraction form
    69,009.60/103,514.40 = 31,569.60/x
  3. Step 3: Cross multiply
    69,009.60x = 103,514.40 × 31,569.60
  4. Step 4: Simplify right side
    69,009.60x = 3,267,908,202.24
  5. Step 5: Solve for x
    x = 3,267,908,202.24/69,009.60
  6. Step 6: Final answer
    x = 47,354.40

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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.