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Finding the Fourth Proportional to 61,187.32, 84,450.06 and 39,984.76

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Solution

The fourth proportional to 61,187.32, 84,450.06 and 39,984.76 is: 55,186.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,187.32 : 84,450.06 = 39,984.76 : x
  2. Step 2: Convert to fraction form
    61,187.32/84,450.06 = 39,984.76/x
  3. Step 3: Cross multiply
    61,187.32x = 84,450.06 × 39,984.76
  4. Step 4: Simplify right side
    61,187.32x = 3,376,715,381.09
  5. Step 5: Solve for x
    x = 3,376,715,381.09/61,187.32
  6. Step 6: Final answer
    x = 55,186.52

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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.