Home / 81,211,554.92-111,947,962.32-49,791,434.36

Finding the Fourth Proportional to 81,211,554.92, 111,947,962.32 and 49,791,434.36

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Solution

The fourth proportional to 81,211,554.92, 111,947,962.32 and 49,791,434.36 is: 68,636,164.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,211,554.92 : 111,947,962.32 = 49,791,434.36 : x
  2. Step 2: Convert to fraction form
    81,211,554.92/111,947,962.32 = 49,791,434.36/x
  3. Step 3: Cross multiply
    81,211,554.92x = 111,947,962.32 × 49,791,434.36
  4. Step 4: Simplify right side
    81,211,554.92x = 5,574,049,617,592,033
  5. Step 5: Solve for x
    x = 5,574,049,617,592,033/81,211,554.92
  6. Step 6: Final answer
    x = 68,636,164.19

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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.