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Finding the Fourth Proportional to 61,107.51, 84,317.05 and 39,322.94

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Solution

The fourth proportional to 61,107.51, 84,317.05 and 39,322.94 is: 54,258.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,107.51 : 84,317.05 = 39,322.94 : x
  2. Step 2: Convert to fraction form
    61,107.51/84,317.05 = 39,322.94/x
  3. Step 3: Cross multiply
    61,107.51x = 84,317.05 × 39,322.94
  4. Step 4: Simplify right side
    61,107.51x = 3,315,594,637.12
  5. Step 5: Solve for x
    x = 3,315,594,637.12/61,107.51
  6. Step 6: Final answer
    x = 54,258.38

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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.