Home / 72,689,155.46-100,311,346.40-39,650,124.60

Finding the Fourth Proportional to 72,689,155.46, 100,311,346.40 and 39,650,124.60

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Solution

The fourth proportional to 72,689,155.46, 100,311,346.40 and 39,650,124.60 is: 54,717,342.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,689,155.46 : 100,311,346.40 = 39,650,124.60 : x
  2. Step 2: Convert to fraction form
    72,689,155.46/100,311,346.40 = 39,650,124.60/x
  3. Step 3: Cross multiply
    72,689,155.46x = 100,311,346.40 × 39,650,124.60
  4. Step 4: Simplify right side
    72,689,155.46x = 3,977,357,383,553,762
  5. Step 5: Solve for x
    x = 3,977,357,383,553,762/72,689,155.46
  6. Step 6: Final answer
    x = 54,717,342.06

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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.