Home / 65,790.09-90,783.63-38,927.34

Finding the Fourth Proportional to 65,790.09, 90,783.63 and 38,927.34

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Solution

The fourth proportional to 65,790.09, 90,783.63 and 38,927.34 is: 53,715.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,790.09 : 90,783.63 = 38,927.34 : x
  2. Step 2: Convert to fraction form
    65,790.09/90,783.63 = 38,927.34/x
  3. Step 3: Cross multiply
    65,790.09x = 90,783.63 × 38,927.34
  4. Step 4: Simplify right side
    65,790.09x = 3,533,965,231.44
  5. Step 5: Solve for x
    x = 3,533,965,231.44/65,790.09
  6. Step 6: Final answer
    x = 53,715.77

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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.