Home / 81,870,501.60-122,432,747.13-61,135,500.60

Finding the Fourth Proportional to 81,870,501.60, 122,432,747.13 and 61,135,500.60

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Solution

The fourth proportional to 81,870,501.60, 122,432,747.13 and 61,135,500.60 is: 91,424,715.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,870,501.60 : 122,432,747.13 = 61,135,500.60 : x
  2. Step 2: Convert to fraction form
    81,870,501.60/122,432,747.13 = 61,135,500.60/x
  3. Step 3: Cross multiply
    81,870,501.60x = 122,432,747.13 × 61,135,500.60
  4. Step 4: Simplify right side
    81,870,501.60x = 7,484,987,285,625,763
  5. Step 5: Solve for x
    x = 7,484,987,285,625,763/81,870,501.60
  6. Step 6: Final answer
    x = 91,424,715.12

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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.