Home / 83,783.77-125,636.13-30,438.14

Finding the Fourth Proportional to 83,783.77, 125,636.13 and 30,438.14

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Solution

The fourth proportional to 83,783.77, 125,636.13 and 30,438.14 is: 45,642.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,783.77 : 125,636.13 = 30,438.14 : x
  2. Step 2: Convert to fraction form
    83,783.77/125,636.13 = 30,438.14/x
  3. Step 3: Cross multiply
    83,783.77x = 125,636.13 × 30,438.14
  4. Step 4: Simplify right side
    83,783.77x = 3,824,129,485.82
  5. Step 5: Solve for x
    x = 3,824,129,485.82/83,783.77
  6. Step 6: Final answer
    x = 45,642.84

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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.