Home / 77,976.90-107,608.12-42,166.92

Finding the Fourth Proportional to 77,976.90, 107,608.12 and 42,166.92

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Solution

The fourth proportional to 77,976.90, 107,608.12 and 42,166.92 is: 58,190.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,976.90 : 107,608.12 = 42,166.92 : x
  2. Step 2: Convert to fraction form
    77,976.90/107,608.12 = 42,166.92/x
  3. Step 3: Cross multiply
    77,976.90x = 107,608.12 × 42,166.92
  4. Step 4: Simplify right side
    77,976.90x = 4,537,502,987.39
  5. Step 5: Solve for x
    x = 4,537,502,987.39/77,976.90
  6. Step 6: Final answer
    x = 58,190.35

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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.