Home / 56,274.94-77,659.93-30,780.80

Finding the Fourth Proportional to 56,274.94, 77,659.93 and 30,780.80

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Solution

The fourth proportional to 56,274.94, 77,659.93 and 30,780.80 is: 42,477.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,274.94 : 77,659.93 = 30,780.80 : x
  2. Step 2: Convert to fraction form
    56,274.94/77,659.93 = 30,780.80/x
  3. Step 3: Cross multiply
    56,274.94x = 77,659.93 × 30,780.80
  4. Step 4: Simplify right side
    56,274.94x = 2,390,434,773.34
  5. Step 5: Solve for x
    x = 2,390,434,773.34/56,274.94
  6. Step 6: Final answer
    x = 42,477.78

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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.