Home / 78,041.90-117,075.02-25,439.15

Finding the Fourth Proportional to 78,041.90, 117,075.02 and 25,439.15

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Solution

The fourth proportional to 78,041.90, 117,075.02 and 25,439.15 is: 38,162.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,041.90 : 117,075.02 = 25,439.15 : x
  2. Step 2: Convert to fraction form
    78,041.90/117,075.02 = 25,439.15/x
  3. Step 3: Cross multiply
    78,041.90x = 117,075.02 × 25,439.15
  4. Step 4: Simplify right side
    78,041.90x = 2,978,289,160.52
  5. Step 5: Solve for x
    x = 2,978,289,160.52/78,041.90
  6. Step 6: Final answer
    x = 38,162.69

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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.