Home / 56,129.93-77,453.79-30,977.81

Finding the Fourth Proportional to 56,129.93, 77,453.79 and 30,977.81

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Solution

The fourth proportional to 56,129.93, 77,453.79 and 30,977.81 is: 42,746.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,129.93 : 77,453.79 = 30,977.81 : x
  2. Step 2: Convert to fraction form
    56,129.93/77,453.79 = 30,977.81/x
  3. Step 3: Cross multiply
    56,129.93x = 77,453.79 × 30,977.81
  4. Step 4: Simplify right side
    56,129.93x = 2,399,348,790.40
  5. Step 5: Solve for x
    x = 2,399,348,790.40/56,129.93
  6. Step 6: Final answer
    x = 42,746.33

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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.