Home / 55,712.81-76,879.10-30,562.31

Finding the Fourth Proportional to 55,712.81, 76,879.10 and 30,562.31

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Solution

The fourth proportional to 55,712.81, 76,879.10 and 30,562.31 is: 42,173.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,712.81 : 76,879.10 = 30,562.31 : x
  2. Step 2: Convert to fraction form
    55,712.81/76,879.10 = 30,562.31/x
  3. Step 3: Cross multiply
    55,712.81x = 76,879.10 × 30,562.31
  4. Step 4: Simplify right side
    55,712.81x = 2,349,602,349.51
  5. Step 5: Solve for x
    x = 2,349,602,349.51/55,712.81
  6. Step 6: Final answer
    x = 42,173.47

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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.