Home / 78,576,216.12-108,435,285.78-42,812,478.93

Finding the Fourth Proportional to 78,576,216.12, 108,435,285.78 and 42,812,478.93

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Solution

The fourth proportional to 78,576,216.12, 108,435,285.78 and 42,812,478.93 is: 59,081,279.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,576,216.12 : 108,435,285.78 = 42,812,478.93 : x
  2. Step 2: Convert to fraction form
    78,576,216.12/108,435,285.78 = 42,812,478.93/x
  3. Step 3: Cross multiply
    78,576,216.12x = 108,435,285.78 × 42,812,478.93
  4. Step 4: Simplify right side
    78,576,216.12x = 4,642,383,387,724,779
  5. Step 5: Solve for x
    x = 4,642,383,387,724,779/78,576,216.12
  6. Step 6: Final answer
    x = 59,081,279.51

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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.