Home / 81,947,807.70-122,921,711.55-21,363,533.70

Finding the Fourth Proportional to 81,947,807.70, 122,921,711.55 and 21,363,533.70

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Solution

The fourth proportional to 81,947,807.70, 122,921,711.55 and 21,363,533.70 is: 32,045,300.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,947,807.70 : 122,921,711.55 = 21,363,533.70 : x
  2. Step 2: Convert to fraction form
    81,947,807.70/122,921,711.55 = 21,363,533.70/x
  3. Step 3: Cross multiply
    81,947,807.70x = 122,921,711.55 × 21,363,533.70
  4. Step 4: Simplify right side
    81,947,807.70x = 2,626,042,127,160,104
  5. Step 5: Solve for x
    x = 2,626,042,127,160,104/81,947,807.70
  6. Step 6: Final answer
    x = 32,045,300.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.