Home / 72,263.19-99,729.18-40,435.05

Finding the Fourth Proportional to 72,263.19, 99,729.18 and 40,435.05

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Solution

The fourth proportional to 72,263.19, 99,729.18 and 40,435.05 is: 55,803.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,263.19 : 99,729.18 = 40,435.05 : x
  2. Step 2: Convert to fraction form
    72,263.19/99,729.18 = 40,435.05/x
  3. Step 3: Cross multiply
    72,263.19x = 99,729.18 × 40,435.05
  4. Step 4: Simplify right side
    72,263.19x = 4,032,554,379.76
  5. Step 5: Solve for x
    x = 4,032,554,379.76/72,263.19
  6. Step 6: Final answer
    x = 55,803.71

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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.