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Finding the Fourth Proportional to 56,052.76, 77,352.80 and 30,902.80

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Solution

The fourth proportional to 56,052.76, 77,352.80 and 30,902.80 is: 42,645.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,052.76 : 77,352.80 = 30,902.80 : x
  2. Step 2: Convert to fraction form
    56,052.76/77,352.80 = 30,902.80/x
  3. Step 3: Cross multiply
    56,052.76x = 77,352.80 × 30,902.80
  4. Step 4: Simplify right side
    56,052.76x = 2,390,418,107.84
  5. Step 5: Solve for x
    x = 2,390,418,107.84/56,052.76
  6. Step 6: Final answer
    x = 42,645.86

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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.