Home / 81,685,984.32-112,729,020.56-45,018,917.28

Finding the Fourth Proportional to 81,685,984.32, 112,729,020.56 and 45,018,917.28

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Solution

The fourth proportional to 81,685,984.32, 112,729,020.56 and 45,018,917.28 is: 62,127,407.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,685,984.32 : 112,729,020.56 = 45,018,917.28 : x
  2. Step 2: Convert to fraction form
    81,685,984.32/112,729,020.56 = 45,018,917.28/x
  3. Step 3: Cross multiply
    81,685,984.32x = 112,729,020.56 × 45,018,917.28
  4. Step 4: Simplify right side
    81,685,984.32x = 5,074,938,451,646,060
  5. Step 5: Solve for x
    x = 5,074,938,451,646,060/81,685,984.32
  6. Step 6: Final answer
    x = 62,127,407.71

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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.