Home / 72,250,659.21-99,705,961.71-39,210,899.58

Finding the Fourth Proportional to 72,250,659.21, 99,705,961.71 and 39,210,899.58

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Solution

The fourth proportional to 72,250,659.21, 99,705,961.71 and 39,210,899.58 is: 54,111,069.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,250,659.21 : 99,705,961.71 = 39,210,899.58 : x
  2. Step 2: Convert to fraction form
    72,250,659.21/99,705,961.71 = 39,210,899.58/x
  3. Step 3: Cross multiply
    72,250,659.21x = 99,705,961.71 × 39,210,899.58
  4. Step 4: Simplify right side
    72,250,659.21x = 3,909,560,452,138,134.50
  5. Step 5: Solve for x
    x = 3,909,560,452,138,134.50/72,250,659.21
  6. Step 6: Final answer
    x = 54,111,069.64

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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.