Home / 81,059.23-121,564.14-28,456.21

Finding the Fourth Proportional to 81,059.23, 121,564.14 and 28,456.21

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Solution

The fourth proportional to 81,059.23, 121,564.14 and 28,456.21 is: 42,675.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,059.23 : 121,564.14 = 28,456.21 : x
  2. Step 2: Convert to fraction form
    81,059.23/121,564.14 = 28,456.21/x
  3. Step 3: Cross multiply
    81,059.23x = 121,564.14 × 28,456.21
  4. Step 4: Simplify right side
    81,059.23x = 3,459,254,696.31
  5. Step 5: Solve for x
    x = 3,459,254,696.31/81,059.23
  6. Step 6: Final answer
    x = 42,675.64

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1.5x scale

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.