Home / 72,726,515.37-100,364,729.96-39,688,903.35

Finding the Fourth Proportional to 72,726,515.37, 100,364,729.96 and 39,688,903.35

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Solution

The fourth proportional to 72,726,515.37, 100,364,729.96 and 39,688,903.35 is: 54,771,853.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,726,515.37 : 100,364,729.96 = 39,688,903.35 : x
  2. Step 2: Convert to fraction form
    72,726,515.37/100,364,729.96 = 39,688,903.35/x
  3. Step 3: Cross multiply
    72,726,515.37x = 100,364,729.96 × 39,688,903.35
  4. Step 4: Simplify right side
    72,726,515.37x = 3,983,366,066,932,845
  5. Step 5: Solve for x
    x = 3,983,366,066,932,845/72,726,515.37
  6. Step 6: Final answer
    x = 54,771,853.80

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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.