Home / 80,416.51-120,664.07-56,875.33

Finding the Fourth Proportional to 80,416.51, 120,664.07 and 56,875.33

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Solution

The fourth proportional to 80,416.51, 120,664.07 and 56,875.33 is: 85,340.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,416.51 : 120,664.07 = 56,875.33 : x
  2. Step 2: Convert to fraction form
    80,416.51/120,664.07 = 56,875.33/x
  3. Step 3: Cross multiply
    80,416.51x = 120,664.07 × 56,875.33
  4. Step 4: Simplify right side
    80,416.51x = 6,862,808,800.39
  5. Step 5: Solve for x
    x = 6,862,808,800.39/80,416.51
  6. Step 6: Final answer
    x = 85,340.79

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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.