Home / 81,007,007.85-111,789,667.40-43,837,289.28

Finding the Fourth Proportional to 81,007,007.85, 111,789,667.40 and 43,837,289.28

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Solution

The fourth proportional to 81,007,007.85, 111,789,667.40 and 43,837,289.28 is: 60,495,457.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,007,007.85 : 111,789,667.40 = 43,837,289.28 : x
  2. Step 2: Convert to fraction form
    81,007,007.85/111,789,667.40 = 43,837,289.28/x
  3. Step 3: Cross multiply
    81,007,007.85x = 111,789,667.40 × 43,837,289.28
  4. Step 4: Simplify right side
    81,007,007.85x = 4,900,555,988,042,051
  5. Step 5: Solve for x
    x = 4,900,555,988,042,051/81,007,007.85
  6. Step 6: Final answer
    x = 60,495,457.34

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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.