Home / 56,021.82-77,309.12-30,528.41

Finding the Fourth Proportional to 56,021.82, 77,309.12 and 30,528.41

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Solution

The fourth proportional to 56,021.82, 77,309.12 and 30,528.41 is: 42,128.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,021.82 : 77,309.12 = 30,528.41 : x
  2. Step 2: Convert to fraction form
    56,021.82/77,309.12 = 30,528.41/x
  3. Step 3: Cross multiply
    56,021.82x = 77,309.12 × 30,528.41
  4. Step 4: Simplify right side
    56,021.82x = 2,360,124,512.10
  5. Step 5: Solve for x
    x = 2,360,124,512.10/56,021.82
  6. Step 6: Final answer
    x = 42,128.67

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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.