Home / 77,688,647.26-107,208,677.19-42,405,280.54

Finding the Fourth Proportional to 77,688,647.26, 107,208,677.19 and 42,405,280.54

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Solution

The fourth proportional to 77,688,647.26, 107,208,677.19 and 42,405,280.54 is: 58,518,383.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,688,647.26 : 107,208,677.19 = 42,405,280.54 : x
  2. Step 2: Convert to fraction form
    77,688,647.26/107,208,677.19 = 42,405,280.54/x
  3. Step 3: Cross multiply
    77,688,647.26x = 107,208,677.19 × 42,405,280.54
  4. Step 4: Simplify right side
    77,688,647.26x = 4,546,214,032,564,249
  5. Step 5: Solve for x
    x = 4,546,214,032,564,249/77,688,647.26
  6. Step 6: Final answer
    x = 58,518,383.22

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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.