Home / 84,728.67-127,053.56-31,418.49

Finding the Fourth Proportional to 84,728.67, 127,053.56 and 31,418.49

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Solution

The fourth proportional to 84,728.67, 127,053.56 and 31,418.49 is: 47,113.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,728.67 : 127,053.56 = 31,418.49 : x
  2. Step 2: Convert to fraction form
    84,728.67/127,053.56 = 31,418.49/x
  3. Step 3: Cross multiply
    84,728.67x = 127,053.56 × 31,418.49
  4. Step 4: Simplify right side
    84,728.67x = 3,991,830,847.23
  5. Step 5: Solve for x
    x = 3,991,830,847.23/84,728.67
  6. Step 6: Final answer
    x = 47,113.11

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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.