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Finding the Fourth Proportional to 55,879.74, 77,114.43 and 30,386.34

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Solution

The fourth proportional to 55,879.74, 77,114.43 and 30,386.34 is: 41,933.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,879.74 : 77,114.43 = 30,386.34 : x
  2. Step 2: Convert to fraction form
    55,879.74/77,114.43 = 30,386.34/x
  3. Step 3: Cross multiply
    55,879.74x = 77,114.43 × 30,386.34
  4. Step 4: Simplify right side
    55,879.74x = 2,343,225,288.89
  5. Step 5: Solve for x
    x = 2,343,225,288.89/55,879.74
  6. Step 6: Final answer
    x = 41,933.36

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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.