Home / 72,130.14-99,537.75-40,299.24

Finding the Fourth Proportional to 72,130.14, 99,537.75 and 40,299.24

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Solution

The fourth proportional to 72,130.14, 99,537.75 and 40,299.24 is: 55,611.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,130.14 : 99,537.75 = 40,299.24 : x
  2. Step 2: Convert to fraction form
    72,130.14/99,537.75 = 40,299.24/x
  3. Step 3: Cross multiply
    72,130.14x = 99,537.75 × 40,299.24
  4. Step 4: Simplify right side
    72,130.14x = 4,011,295,676.31
  5. Step 5: Solve for x
    x = 4,011,295,676.31/72,130.14
  6. Step 6: Final answer
    x = 55,611.92

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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.