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Finding the Fourth Proportional to 61,045.44, 91,412.64 and 40,205.76

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Solution

The fourth proportional to 61,045.44, 91,412.64 and 40,205.76 is: 60,206.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,045.44 : 91,412.64 = 40,205.76 : x
  2. Step 2: Convert to fraction form
    61,045.44/91,412.64 = 40,205.76/x
  3. Step 3: Cross multiply
    61,045.44x = 91,412.64 × 40,205.76
  4. Step 4: Simplify right side
    61,045.44x = 3,675,314,664.81
  5. Step 5: Solve for x
    x = 3,675,314,664.81/61,045.44
  6. Step 6: Final answer
    x = 60,206.21

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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.