Home / 56,190.78-77,542.23-31,039.74

Finding the Fourth Proportional to 56,190.78, 77,542.23 and 31,039.74

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Solution

The fourth proportional to 56,190.78, 77,542.23 and 31,039.74 is: 42,834.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,190.78 : 77,542.23 = 31,039.74 : x
  2. Step 2: Convert to fraction form
    56,190.78/77,542.23 = 31,039.74/x
  3. Step 3: Cross multiply
    56,190.78x = 77,542.23 × 31,039.74
  4. Step 4: Simplify right side
    56,190.78x = 2,406,890,658.22
  5. Step 5: Solve for x
    x = 2,406,890,658.22/56,190.78
  6. Step 6: Final answer
    x = 42,834.26

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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.