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Finding the Fourth Proportional to 53,392.67, 73,679.76 and 30,738.90

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Solution

The fourth proportional to 53,392.67, 73,679.76 and 30,738.90 is: 42,418.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,392.67 : 73,679.76 = 30,738.90 : x
  2. Step 2: Convert to fraction form
    53,392.67/73,679.76 = 30,738.90/x
  3. Step 3: Cross multiply
    53,392.67x = 73,679.76 × 30,738.90
  4. Step 4: Simplify right side
    53,392.67x = 2,264,834,774.66
  5. Step 5: Solve for x
    x = 2,264,834,774.66/53,392.67
  6. Step 6: Final answer
    x = 42,418.46

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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.