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Finding the Fourth Proportional to 69,913, 96,487.23 and 39,706.48

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Solution

The fourth proportional to 69,913, 96,487.23 and 39,706.48 is: 54,799.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,913 : 96,487.23 = 39,706.48 : x
  2. Step 2: Convert to fraction form
    69,913/96,487.23 = 39,706.48/x
  3. Step 3: Cross multiply
    69,913x = 96,487.23 × 39,706.48
  4. Step 4: Simplify right side
    69,913x = 3,831,168,268.25
  5. Step 5: Solve for x
    x = 3,831,168,268.25/69,913
  6. Step 6: Final answer
    x = 54,799.08

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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.