Home / 72,686,970.50-100,308,333.38-39,647,928.69

Finding the Fourth Proportional to 72,686,970.50, 100,308,333.38 and 39,647,928.69

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Solution

The fourth proportional to 72,686,970.50, 100,308,333.38 and 39,647,928.69 is: 54,714,312.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,686,970.50 : 100,308,333.38 = 39,647,928.69 : x
  2. Step 2: Convert to fraction form
    72,686,970.50/100,308,333.38 = 39,647,928.69/x
  3. Step 3: Cross multiply
    72,686,970.50x = 100,308,333.38 × 39,647,928.69
  4. Step 4: Simplify right side
    72,686,970.50x = 3,977,017,648,664,747
  5. Step 5: Solve for x
    x = 3,977,017,648,664,747/72,686,970.50
  6. Step 6: Final answer
    x = 54,714,312.92

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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.