Home / 81,421.63-112,329.50-50,776.70

Finding the Fourth Proportional to 81,421.63, 112,329.50 and 50,776.70

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Solution

The fourth proportional to 81,421.63, 112,329.50 and 50,776.70 is: 70,051.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,421.63 : 112,329.50 = 50,776.70 : x
  2. Step 2: Convert to fraction form
    81,421.63/112,329.50 = 50,776.70/x
  3. Step 3: Cross multiply
    81,421.63x = 112,329.50 × 50,776.70
  4. Step 4: Simplify right side
    81,421.63x = 5,703,720,887.94
  5. Step 5: Solve for x
    x = 5,703,720,887.94/81,421.63
  6. Step 6: Final answer
    x = 70,051.67

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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.