Home / 81,657.09-122,506.47-39,557.34

Finding the Fourth Proportional to 81,657.09, 122,506.47 and 39,557.34

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Solution

The fourth proportional to 81,657.09, 122,506.47 and 39,557.34 is: 59,346.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,657.09 : 122,506.47 = 39,557.34 : x
  2. Step 2: Convert to fraction form
    81,657.09/122,506.47 = 39,557.34/x
  3. Step 3: Cross multiply
    81,657.09x = 122,506.47 × 39,557.34
  4. Step 4: Simplify right side
    81,657.09x = 4,846,030,085.99
  5. Step 5: Solve for x
    x = 4,846,030,085.99/81,657.09
  6. Step 6: Final answer
    x = 59,346.10

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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.