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Finding the Fourth Proportional to 61,122.32, 91,684.76 and 19,569.20

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Solution

The fourth proportional to 61,122.32, 91,684.76 and 19,569.20 is: 29,354.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,122.32 : 91,684.76 = 19,569.20 : x
  2. Step 2: Convert to fraction form
    61,122.32/91,684.76 = 19,569.20/x
  3. Step 3: Cross multiply
    61,122.32x = 91,684.76 × 19,569.20
  4. Step 4: Simplify right side
    61,122.32x = 1,794,197,405.39
  5. Step 5: Solve for x
    x = 1,794,197,405.39/61,122.32
  6. Step 6: Final answer
    x = 29,354.21

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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.