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Finding the Fourth Proportional to 65,977.20, 91,048.32 and 37,681.20

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Solution

The fourth proportional to 65,977.20, 91,048.32 and 37,681.20 is: 51,999.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,977.20 : 91,048.32 = 37,681.20 : x
  2. Step 2: Convert to fraction form
    65,977.20/91,048.32 = 37,681.20/x
  3. Step 3: Cross multiply
    65,977.20x = 91,048.32 × 37,681.20
  4. Step 4: Simplify right side
    65,977.20x = 3,430,809,955.58
  5. Step 5: Solve for x
    x = 3,430,809,955.58/65,977.20
  6. Step 6: Final answer
    x = 51,999.93

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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.