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Finding the Fourth Proportional to 61,064.58, 84,221.73 and 40,915.02

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Solution

The fourth proportional to 61,064.58, 84,221.73 and 40,915.02 is: 56,430.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,064.58 : 84,221.73 = 40,915.02 : x
  2. Step 2: Convert to fraction form
    61,064.58/84,221.73 = 40,915.02/x
  3. Step 3: Cross multiply
    61,064.58x = 84,221.73 × 40,915.02
  4. Step 4: Simplify right side
    61,064.58x = 3,445,933,767.38
  5. Step 5: Solve for x
    x = 3,445,933,767.38/61,064.58
  6. Step 6: Final answer
    x = 56,430.97

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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.