Home / 81,147.51-121,539.76-46,911.34

Finding the Fourth Proportional to 81,147.51, 121,539.76 and 46,911.34

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Solution

The fourth proportional to 81,147.51, 121,539.76 and 46,911.34 is: 70,262.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,147.51 : 121,539.76 = 46,911.34 : x
  2. Step 2: Convert to fraction form
    81,147.51/121,539.76 = 46,911.34/x
  3. Step 3: Cross multiply
    81,147.51x = 121,539.76 × 46,911.34
  4. Step 4: Simplify right side
    81,147.51x = 5,701,592,397.18
  5. Step 5: Solve for x
    x = 5,701,592,397.18/81,147.51
  6. Step 6: Final answer
    x = 70,262.07

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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.