Home / 80,501.39-111,053.32-56,641.22

Finding the Fourth Proportional to 80,501.39, 111,053.32 and 56,641.22

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Solution

The fourth proportional to 80,501.39, 111,053.32 and 56,641.22 is: 78,137.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,501.39 : 111,053.32 = 56,641.22 : x
  2. Step 2: Convert to fraction form
    80,501.39/111,053.32 = 56,641.22/x
  3. Step 3: Cross multiply
    80,501.39x = 111,053.32 × 56,641.22
  4. Step 4: Simplify right side
    80,501.39x = 6,290,194,832.98
  5. Step 5: Solve for x
    x = 6,290,194,832.98/80,501.39
  6. Step 6: Final answer
    x = 78,137.72

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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.