Home / 78,042.03-107,698.28-42,232.03

Finding the Fourth Proportional to 78,042.03, 107,698.28 and 42,232.03

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Solution

The fourth proportional to 78,042.03, 107,698.28 and 42,232.03 is: 58,280.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,042.03 : 107,698.28 = 42,232.03 : x
  2. Step 2: Convert to fraction form
    78,042.03/107,698.28 = 42,232.03/x
  3. Step 3: Cross multiply
    78,042.03x = 107,698.28 × 42,232.03
  4. Step 4: Simplify right side
    78,042.03x = 4,548,317,473.64
  5. Step 5: Solve for x
    x = 4,548,317,473.64/78,042.03
  6. Step 6: Final answer
    x = 58,280.36

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1.5x scale

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.