Home / 81,685,984.24-112,729,020.60-45,018,917.20

Finding the Fourth Proportional to 81,685,984.24, 112,729,020.60 and 45,018,917.20

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Solution

The fourth proportional to 81,685,984.24, 112,729,020.60 and 45,018,917.20 is: 62,127,407.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,685,984.24 : 112,729,020.60 = 45,018,917.20 : x
  2. Step 2: Convert to fraction form
    81,685,984.24/112,729,020.60 = 45,018,917.20/x
  3. Step 3: Cross multiply
    81,685,984.24x = 112,729,020.60 × 45,018,917.20
  4. Step 4: Simplify right side
    81,685,984.24x = 5,074,938,444,428,494
  5. Step 5: Solve for x
    x = 5,074,938,444,428,494/81,685,984.24
  6. Step 6: Final answer
    x = 62,127,407.68

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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.