Home / 78,010.14-107,653.68-42,200.07

Finding the Fourth Proportional to 78,010.14, 107,653.68 and 42,200.07

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Solution

The fourth proportional to 78,010.14, 107,653.68 and 42,200.07 is: 58,235.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,010.14 : 107,653.68 = 42,200.07 : x
  2. Step 2: Convert to fraction form
    78,010.14/107,653.68 = 42,200.07/x
  3. Step 3: Cross multiply
    78,010.14x = 107,653.68 × 42,200.07
  4. Step 4: Simplify right side
    78,010.14x = 4,542,992,831.76
  5. Step 5: Solve for x
    x = 4,542,992,831.76/78,010.14
  6. Step 6: Final answer
    x = 58,235.93

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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.