Home / 80,605.72-111,118.64-56,331.32

Finding the Fourth Proportional to 80,605.72, 111,118.64 and 56,331.32

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Solution

The fourth proportional to 80,605.72, 111,118.64 and 56,331.32 is: 77,655.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,605.72 : 111,118.64 = 56,331.32 : x
  2. Step 2: Convert to fraction form
    80,605.72/111,118.64 = 56,331.32/x
  3. Step 3: Cross multiply
    80,605.72x = 111,118.64 × 56,331.32
  4. Step 4: Simplify right side
    80,605.72x = 6,259,459,667.80
  5. Step 5: Solve for x
    x = 6,259,459,667.80/80,605.72
  6. Step 6: Final answer
    x = 77,655.28

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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.