Home / 53,648.80-74,018.18-30,984.78

Finding the Fourth Proportional to 53,648.80, 74,018.18 and 30,984.78

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Solution

The fourth proportional to 53,648.80, 74,018.18 and 30,984.78 is: 42,749.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,648.80 : 74,018.18 = 30,984.78 : x
  2. Step 2: Convert to fraction form
    53,648.80/74,018.18 = 30,984.78/x
  3. Step 3: Cross multiply
    53,648.80x = 74,018.18 × 30,984.78
  4. Step 4: Simplify right side
    53,648.80x = 2,293,437,023.30
  5. Step 5: Solve for x
    x = 2,293,437,023.30/53,648.80
  6. Step 6: Final answer
    x = 42,749.08

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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.