Home / 72,715.49-100,313.70-42,502.09

Finding the Fourth Proportional to 72,715.49, 100,313.70 and 42,502.09

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Solution

The fourth proportional to 72,715.49, 100,313.70 and 42,502.09 is: 58,633.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,715.49 : 100,313.70 = 42,502.09 : x
  2. Step 2: Convert to fraction form
    72,715.49/100,313.70 = 42,502.09/x
  3. Step 3: Cross multiply
    72,715.49x = 100,313.70 × 42,502.09
  4. Step 4: Simplify right side
    72,715.49x = 4,263,541,548.59
  5. Step 5: Solve for x
    x = 4,263,541,548.59/72,715.49
  6. Step 6: Final answer
    x = 58,633.19

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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.