Home / 74,285.35-111,428.27-18,881.35

Finding the Fourth Proportional to 74,285.35, 111,428.27 and 18,881.35

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Solution

The fourth proportional to 74,285.35, 111,428.27 and 18,881.35 is: 28,322.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,285.35 : 111,428.27 = 18,881.35 : x
  2. Step 2: Convert to fraction form
    74,285.35/111,428.27 = 18,881.35/x
  3. Step 3: Cross multiply
    74,285.35x = 111,428.27 × 18,881.35
  4. Step 4: Simplify right side
    74,285.35x = 2,103,916,071.36
  5. Step 5: Solve for x
    x = 2,103,916,071.36/74,285.35
  6. Step 6: Final answer
    x = 28,322.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.