Home / 78,030.92-107,682.08-42,220.82

Finding the Fourth Proportional to 78,030.92, 107,682.08 and 42,220.82

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Solution

The fourth proportional to 78,030.92, 107,682.08 and 42,220.82 is: 58,264.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,030.92 : 107,682.08 = 42,220.82 : x
  2. Step 2: Convert to fraction form
    78,030.92/107,682.08 = 42,220.82/x
  3. Step 3: Cross multiply
    78,030.92x = 107,682.08 × 42,220.82
  4. Step 4: Simplify right side
    78,030.92x = 4,546,425,716.91
  5. Step 5: Solve for x
    x = 4,546,425,716.91/78,030.92
  6. Step 6: Final answer
    x = 58,264.41

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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.