Home / 61,147.12-84,383.48-39,913.84

Finding the Fourth Proportional to 61,147.12, 84,383.48 and 39,913.84

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Solution

The fourth proportional to 61,147.12, 84,383.48 and 39,913.84 is: 55,081.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,147.12 : 84,383.48 = 39,913.84 : x
  2. Step 2: Convert to fraction form
    61,147.12/84,383.48 = 39,913.84/x
  3. Step 3: Cross multiply
    61,147.12x = 84,383.48 × 39,913.84
  4. Step 4: Simplify right side
    61,147.12x = 3,368,068,719.36
  5. Step 5: Solve for x
    x = 3,368,068,719.36/61,147.12
  6. Step 6: Final answer
    x = 55,081.40

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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.