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Finding the Fourth Proportional to 79,313.63, 109,457.12 and 45,790.43

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Solution

The fourth proportional to 79,313.63, 109,457.12 and 45,790.43 is: 63,193.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,313.63 : 109,457.12 = 45,790.43 : x
  2. Step 2: Convert to fraction form
    79,313.63/109,457.12 = 45,790.43/x
  3. Step 3: Cross multiply
    79,313.63x = 109,457.12 × 45,790.43
  4. Step 4: Simplify right side
    79,313.63x = 5,012,088,158.55
  5. Step 5: Solve for x
    x = 5,012,088,158.55/79,313.63
  6. Step 6: Final answer
    x = 63,193.28

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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.