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Finding the Fourth Proportional to 101,603.57, 140,211.43 and 56,281.41

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Solution

The fourth proportional to 101,603.57, 140,211.43 and 56,281.41 is: 77,667.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,603.57 : 140,211.43 = 56,281.41 : x
  2. Step 2: Convert to fraction form
    101,603.57/140,211.43 = 56,281.41/x
  3. Step 3: Cross multiply
    101,603.57x = 140,211.43 × 56,281.41
  4. Step 4: Simplify right side
    101,603.57x = 7,891,296,837.81
  5. Step 5: Solve for x
    x = 7,891,296,837.81/101,603.57
  6. Step 6: Final answer
    x = 77,667.52

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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.