Home / 53,648.48-74,037.47-30,990.47

Finding the Fourth Proportional to 53,648.48, 74,037.47 and 30,990.47

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Solution

The fourth proportional to 53,648.48, 74,037.47 and 30,990.47 is: 42,768.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,648.48 : 74,037.47 = 30,990.47 : x
  2. Step 2: Convert to fraction form
    53,648.48/74,037.47 = 30,990.47/x
  3. Step 3: Cross multiply
    53,648.48x = 74,037.47 × 30,990.47
  4. Step 4: Simplify right side
    53,648.48x = 2,294,456,179.62
  5. Step 5: Solve for x
    x = 2,294,456,179.62/53,648.48
  6. Step 6: Final answer
    x = 42,768.34

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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.