Home / 78,586,577.70-107,663,995.61-75,641,174.70

Finding the Fourth Proportional to 78,586,577.70, 107,663,995.61 and 75,641,174.70

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Solution

The fourth proportional to 78,586,577.70, 107,663,995.61 and 75,641,174.70 is: 103,628,779.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,586,577.70 : 107,663,995.61 = 75,641,174.70 : x
  2. Step 2: Convert to fraction form
    78,586,577.70/107,663,995.61 = 75,641,174.70/x
  3. Step 3: Cross multiply
    78,586,577.70x = 107,663,995.61 × 75,641,174.70
  4. Step 4: Simplify right side
    78,586,577.70x = 8,143,831,100,457,838
  5. Step 5: Solve for x
    x = 8,143,831,100,457,838/78,586,577.70
  6. Step 6: Final answer
    x = 103,628,779.10

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.