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Finding the Fourth Proportional to 56,089.56, 77,409.06 and 30,939.06

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Solution

The fourth proportional to 56,089.56, 77,409.06 and 30,939.06 is: 42,698.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,089.56 : 77,409.06 = 30,939.06 : x
  2. Step 2: Convert to fraction form
    56,089.56/77,409.06 = 30,939.06/x
  3. Step 3: Cross multiply
    56,089.56x = 77,409.06 × 30,939.06
  4. Step 4: Simplify right side
    56,089.56x = 2,394,963,551.88
  5. Step 5: Solve for x
    x = 2,394,963,551.88/56,089.56
  6. Step 6: Final answer
    x = 42,698.92

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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.