Home / 55,891.24-77,128.14-30,740.56

Finding the Fourth Proportional to 55,891.24, 77,128.14 and 30,740.56

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Solution

The fourth proportional to 55,891.24, 77,128.14 and 30,740.56 is: 42,421.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,891.24 : 77,128.14 = 30,740.56 : x
  2. Step 2: Convert to fraction form
    55,891.24/77,128.14 = 30,740.56/x
  3. Step 3: Cross multiply
    55,891.24x = 77,128.14 × 30,740.56
  4. Step 4: Simplify right side
    55,891.24x = 2,370,962,215.36
  5. Step 5: Solve for x
    x = 2,370,962,215.36/55,891.24
  6. Step 6: Final answer
    x = 42,421.00

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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.