Home / 56,212.51-77,574.38-30,720.45

Finding the Fourth Proportional to 56,212.51, 77,574.38 and 30,720.45

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Solution

The fourth proportional to 56,212.51, 77,574.38 and 30,720.45 is: 42,394.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,212.51 : 77,574.38 = 30,720.45 : x
  2. Step 2: Convert to fraction form
    56,212.51/77,574.38 = 30,720.45/x
  3. Step 3: Cross multiply
    56,212.51x = 77,574.38 × 30,720.45
  4. Step 4: Simplify right side
    56,212.51x = 2,383,120,037.77
  5. Step 5: Solve for x
    x = 2,383,120,037.77/56,212.51
  6. Step 6: Final answer
    x = 42,394.83

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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.