Home / 78,075.10-107,739.56-45,805.23

Finding the Fourth Proportional to 78,075.10, 107,739.56 and 45,805.23

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Solution

The fourth proportional to 78,075.10, 107,739.56 and 45,805.23 is: 63,208.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,075.10 : 107,739.56 = 45,805.23 : x
  2. Step 2: Convert to fraction form
    78,075.10/107,739.56 = 45,805.23/x
  3. Step 3: Cross multiply
    78,075.10x = 107,739.56 × 45,805.23
  4. Step 4: Simplify right side
    78,075.10x = 4,935,035,325.90
  5. Step 5: Solve for x
    x = 4,935,035,325.90/78,075.10
  6. Step 6: Final answer
    x = 63,208.82

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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.