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Finding the Fourth Proportional to 56,440.90, 77,889.35 and 30,949.59

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Solution

The fourth proportional to 56,440.90, 77,889.35 and 30,949.59 is: 42,710.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,440.90 : 77,889.35 = 30,949.59 : x
  2. Step 2: Convert to fraction form
    56,440.90/77,889.35 = 30,949.59/x
  3. Step 3: Cross multiply
    56,440.90x = 77,889.35 × 30,949.59
  4. Step 4: Simplify right side
    56,440.90x = 2,410,643,643.23
  5. Step 5: Solve for x
    x = 2,410,643,643.23/56,440.90
  6. Step 6: Final answer
    x = 42,710.93

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.