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Finding the Fourth Proportional to 85,001.90, 127,466.40 and 42,865.70

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Solution

The fourth proportional to 85,001.90, 127,466.40 and 42,865.70 is: 64,280.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,001.90 : 127,466.40 = 42,865.70 : x
  2. Step 2: Convert to fraction form
    85,001.90/127,466.40 = 42,865.70/x
  3. Step 3: Cross multiply
    85,001.90x = 127,466.40 × 42,865.70
  4. Step 4: Simplify right side
    85,001.90x = 5,463,936,462.48
  5. Step 5: Solve for x
    x = 5,463,936,462.48/85,001.90
  6. Step 6: Final answer
    x = 64,280.17

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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.