Home / 80,426.84-120,679.52-56,885.64

Finding the Fourth Proportional to 80,426.84, 120,679.52 and 56,885.64

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Solution

The fourth proportional to 80,426.84, 120,679.52 and 56,885.64 is: 85,356.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,426.84 : 120,679.52 = 56,885.64 : x
  2. Step 2: Convert to fraction form
    80,426.84/120,679.52 = 56,885.64/x
  3. Step 3: Cross multiply
    80,426.84x = 120,679.52 × 56,885.64
  4. Step 4: Simplify right side
    80,426.84x = 6,864,931,730.09
  5. Step 5: Solve for x
    x = 6,864,931,730.09/80,426.84
  6. Step 6: Final answer
    x = 85,356.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.