Home / 56,421.85-77,858.56-30,923.71

Finding the Fourth Proportional to 56,421.85, 77,858.56 and 30,923.71

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Solution

The fourth proportional to 56,421.85, 77,858.56 and 30,923.71 is: 42,672.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,421.85 : 77,858.56 = 30,923.71 : x
  2. Step 2: Convert to fraction form
    56,421.85/77,858.56 = 30,923.71/x
  3. Step 3: Cross multiply
    56,421.85x = 77,858.56 × 30,923.71
  4. Step 4: Simplify right side
    56,421.85x = 2,407,675,530.46
  5. Step 5: Solve for x
    x = 2,407,675,530.46/56,421.85
  6. Step 6: Final answer
    x = 42,672.75

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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.