Home / 78,075.46-116,935.82-61,102.72

Finding the Fourth Proportional to 78,075.46, 116,935.82 and 61,102.72

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Solution

The fourth proportional to 78,075.46, 116,935.82 and 61,102.72 is: 91,515.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,075.46 : 116,935.82 = 61,102.72 : x
  2. Step 2: Convert to fraction form
    78,075.46/116,935.82 = 61,102.72/x
  3. Step 3: Cross multiply
    78,075.46x = 116,935.82 × 61,102.72
  4. Step 4: Simplify right side
    78,075.46x = 7,145,095,777.24
  5. Step 5: Solve for x
    x = 7,145,095,777.24/78,075.46
  6. Step 6: Final answer
    x = 91,515.26

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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.