Home / 81,137.48-111,961.56-46,681.28

Finding the Fourth Proportional to 81,137.48, 111,961.56 and 46,681.28

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Solution

The fourth proportional to 81,137.48, 111,961.56 and 46,681.28 is: 64,415.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,137.48 : 111,961.56 = 46,681.28 : x
  2. Step 2: Convert to fraction form
    81,137.48/111,961.56 = 46,681.28/x
  3. Step 3: Cross multiply
    81,137.48x = 111,961.56 × 46,681.28
  4. Step 4: Simplify right side
    81,137.48x = 5,226,508,931.60
  5. Step 5: Solve for x
    x = 5,226,508,931.60/81,137.48
  6. Step 6: Final answer
    x = 64,415.47

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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.