Home / 85,850,280.62-128,828,388.72-39,783,563.10

Finding the Fourth Proportional to 85,850,280.62, 128,828,388.72 and 39,783,563.10

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Solution

The fourth proportional to 85,850,280.62, 128,828,388.72 and 39,783,563.10 is: 59,699,890.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,850,280.62 : 128,828,388.72 = 39,783,563.10 : x
  2. Step 2: Convert to fraction form
    85,850,280.62/128,828,388.72 = 39,783,563.10/x
  3. Step 3: Cross multiply
    85,850,280.62x = 128,828,388.72 × 39,783,563.10
  4. Step 4: Simplify right side
    85,850,280.62x = 5,125,252,331,713,448
  5. Step 5: Solve for x
    x = 5,125,252,331,713,448/85,850,280.62
  6. Step 6: Final answer
    x = 59,699,890.26

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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.