Home / 81,513.54-112,316.22-75,903.48

Finding the Fourth Proportional to 81,513.54, 112,316.22 and 75,903.48

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Solution

The fourth proportional to 81,513.54, 112,316.22 and 75,903.48 is: 104,586.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,513.54 : 112,316.22 = 75,903.48 : x
  2. Step 2: Convert to fraction form
    81,513.54/112,316.22 = 75,903.48/x
  3. Step 3: Cross multiply
    81,513.54x = 112,316.22 × 75,903.48
  4. Step 4: Simplify right side
    81,513.54x = 8,525,191,958.45
  5. Step 5: Solve for x
    x = 8,525,191,958.45/81,513.54
  6. Step 6: Final answer
    x = 104,586.21

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1.5x scale

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.