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Finding the Fourth Proportional to 85,240.53, 127,897.65 and 45,751.50

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Solution

The fourth proportional to 85,240.53, 127,897.65 and 45,751.50 is: 68,647.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,240.53 : 127,897.65 = 45,751.50 : x
  2. Step 2: Convert to fraction form
    85,240.53/127,897.65 = 45,751.50/x
  3. Step 3: Cross multiply
    85,240.53x = 127,897.65 × 45,751.50
  4. Step 4: Simplify right side
    85,240.53x = 5,851,509,333.98
  5. Step 5: Solve for x
    x = 5,851,509,333.98/85,240.53
  6. Step 6: Final answer
    x = 68,647.03

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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.