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Finding the Fourth Proportional to 61,810.22, 85,110 and 56,110.34

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Solution

The fourth proportional to 61,810.22, 85,110 and 56,110.34 is: 77,261.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,810.22 : 85,110 = 56,110.34 : x
  2. Step 2: Convert to fraction form
    61,810.22/85,110 = 56,110.34/x
  3. Step 3: Cross multiply
    61,810.22x = 85,110 × 56,110.34
  4. Step 4: Simplify right side
    61,810.22x = 4,775,551,037.40
  5. Step 5: Solve for x
    x = 4,775,551,037.40/61,810.22
  6. Step 6: Final answer
    x = 77,261.51

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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.