Home / 81,685,990.24-112,729,028.88-45,018,923.20

Finding the Fourth Proportional to 81,685,990.24, 112,729,028.88 and 45,018,923.20

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Solution

The fourth proportional to 81,685,990.24, 112,729,028.88 and 45,018,923.20 is: 62,127,415.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,685,990.24 : 112,729,028.88 = 45,018,923.20 : x
  2. Step 2: Convert to fraction form
    81,685,990.24/112,729,028.88 = 45,018,923.20/x
  3. Step 3: Cross multiply
    81,685,990.24x = 112,729,028.88 × 45,018,923.20
  4. Step 4: Simplify right side
    81,685,990.24x = 5,074,939,493,559,302
  5. Step 5: Solve for x
    x = 5,074,939,493,559,302/81,685,990.24
  6. Step 6: Final answer
    x = 62,127,415.96

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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.