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Finding the Fourth Proportional to 56,477.82, 77,917.22 and 39,477.54

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Solution

The fourth proportional to 56,477.82, 77,917.22 and 39,477.54 is: 54,463.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,477.82 : 77,917.22 = 39,477.54 : x
  2. Step 2: Convert to fraction form
    56,477.82/77,917.22 = 39,477.54/x
  3. Step 3: Cross multiply
    56,477.82x = 77,917.22 × 39,477.54
  4. Step 4: Simplify right side
    56,477.82x = 3,075,980,169.24
  5. Step 5: Solve for x
    x = 3,075,980,169.24/56,477.82
  6. Step 6: Final answer
    x = 54,463.51

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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.