Home / 87,071.76-120,022.56-56,803.68

Finding the Fourth Proportional to 87,071.76, 120,022.56 and 56,803.68

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Solution

The fourth proportional to 87,071.76, 120,022.56 and 56,803.68 is: 78,300.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,071.76 : 120,022.56 = 56,803.68 : x
  2. Step 2: Convert to fraction form
    87,071.76/120,022.56 = 56,803.68/x
  3. Step 3: Cross multiply
    87,071.76x = 120,022.56 × 56,803.68
  4. Step 4: Simplify right side
    87,071.76x = 6,817,723,091.02
  5. Step 5: Solve for x
    x = 6,817,723,091.02/87,071.76
  6. Step 6: Final answer
    x = 78,300.05

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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.