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Finding the Fourth Proportional to 71,259.51, 98,336.83 and 39,428.41

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Solution

The fourth proportional to 71,259.51, 98,336.83 and 39,428.41 is: 54,410.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,259.51 : 98,336.83 = 39,428.41 : x
  2. Step 2: Convert to fraction form
    71,259.51/98,336.83 = 39,428.41/x
  3. Step 3: Cross multiply
    71,259.51x = 98,336.83 × 39,428.41
  4. Step 4: Simplify right side
    71,259.51x = 3,877,265,245.04
  5. Step 5: Solve for x
    x = 3,877,265,245.04/71,259.51
  6. Step 6: Final answer
    x = 54,410.49

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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.