Home / 55,899.81-77,140.17-30,749.31

Finding the Fourth Proportional to 55,899.81, 77,140.17 and 30,749.31

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Solution

The fourth proportional to 55,899.81, 77,140.17 and 30,749.31 is: 42,433.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,899.81 : 77,140.17 = 30,749.31 : x
  2. Step 2: Convert to fraction form
    55,899.81/77,140.17 = 30,749.31/x
  3. Step 3: Cross multiply
    55,899.81x = 77,140.17 × 30,749.31
  4. Step 4: Simplify right side
    55,899.81x = 2,372,007,000.78
  5. Step 5: Solve for x
    x = 2,372,007,000.78/55,899.81
  6. Step 6: Final answer
    x = 42,433.19

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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.