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Finding the Fourth Proportional to 61,420.29, 84,759 and 34,562.79

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Solution

The fourth proportional to 61,420.29, 84,759 and 34,562.79 is: 47,696.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,420.29 : 84,759 = 34,562.79 : x
  2. Step 2: Convert to fraction form
    61,420.29/84,759 = 34,562.79/x
  3. Step 3: Cross multiply
    61,420.29x = 84,759 × 34,562.79
  4. Step 4: Simplify right side
    61,420.29x = 2,929,507,517.61
  5. Step 5: Solve for x
    x = 2,929,507,517.61/61,420.29
  6. Step 6: Final answer
    x = 47,696.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.