Home / 77,430-106,847.64-43,895.28

Finding the Fourth Proportional to 77,430, 106,847.64 and 43,895.28

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Solution

The fourth proportional to 77,430, 106,847.64 and 43,895.28 is: 60,572.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,430 : 106,847.64 = 43,895.28 : x
  2. Step 2: Convert to fraction form
    77,430/106,847.64 = 43,895.28/x
  3. Step 3: Cross multiply
    77,430x = 106,847.64 × 43,895.28
  4. Step 4: Simplify right side
    77,430x = 4,690,107,075.14
  5. Step 5: Solve for x
    x = 4,690,107,075.14/77,430
  6. Step 6: Final answer
    x = 60,572.22

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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.