Home / 78,221.14-107,945.44-42,411.19

Finding the Fourth Proportional to 78,221.14, 107,945.44 and 42,411.19

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Solution

The fourth proportional to 78,221.14, 107,945.44 and 42,411.19 is: 58,527.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,221.14 : 107,945.44 = 42,411.19 : x
  2. Step 2: Convert to fraction form
    78,221.14/107,945.44 = 42,411.19/x
  3. Step 3: Cross multiply
    78,221.14x = 107,945.44 × 42,411.19
  4. Step 4: Simplify right side
    78,221.14x = 4,578,094,565.47
  5. Step 5: Solve for x
    x = 4,578,094,565.47/78,221.14
  6. Step 6: Final answer
    x = 58,527.59

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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.