Home / 78,029.16-107,679.45-42,218.37

Finding the Fourth Proportional to 78,029.16, 107,679.45 and 42,218.37

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Solution

The fourth proportional to 78,029.16, 107,679.45 and 42,218.37 is: 58,260.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,029.16 : 107,679.45 = 42,218.37 : x
  2. Step 2: Convert to fraction form
    78,029.16/107,679.45 = 42,218.37/x
  3. Step 3: Cross multiply
    78,029.16x = 107,679.45 × 42,218.37
  4. Step 4: Simplify right side
    78,029.16x = 4,546,050,861.50
  5. Step 5: Solve for x
    x = 4,546,050,861.50/78,029.16
  6. Step 6: Final answer
    x = 58,260.92

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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.