Home / 72,145.11-99,562.46-40,315.35

Finding the Fourth Proportional to 72,145.11, 99,562.46 and 40,315.35

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Solution

The fourth proportional to 72,145.11, 99,562.46 and 40,315.35 is: 55,636.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,145.11 : 99,562.46 = 40,315.35 : x
  2. Step 2: Convert to fraction form
    72,145.11/99,562.46 = 40,315.35/x
  3. Step 3: Cross multiply
    72,145.11x = 99,562.46 × 40,315.35
  4. Step 4: Simplify right side
    72,145.11x = 4,013,895,220.18
  5. Step 5: Solve for x
    x = 4,013,895,220.18/72,145.11
  6. Step 6: Final answer
    x = 55,636.41

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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.