Home / 80,503.26-111,055.90-56,643.09

Finding the Fourth Proportional to 80,503.26, 111,055.90 and 56,643.09

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Solution

The fourth proportional to 80,503.26, 111,055.90 and 56,643.09 is: 78,140.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,503.26 : 111,055.90 = 56,643.09 : x
  2. Step 2: Convert to fraction form
    80,503.26/111,055.90 = 56,643.09/x
  3. Step 3: Cross multiply
    80,503.26x = 111,055.90 × 56,643.09
  4. Step 4: Simplify right side
    80,503.26x = 6,290,549,338.73
  5. Step 5: Solve for x
    x = 6,290,549,338.73/80,503.26
  6. Step 6: Final answer
    x = 78,140.31

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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.