Home / 78,043.29-107,698.86-42,232.65

Finding the Fourth Proportional to 78,043.29, 107,698.86 and 42,232.65

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Solution

The fourth proportional to 78,043.29, 107,698.86 and 42,232.65 is: 58,280.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,043.29 : 107,698.86 = 42,232.65 : x
  2. Step 2: Convert to fraction form
    78,043.29/107,698.86 = 42,232.65/x
  3. Step 3: Cross multiply
    78,043.29x = 107,698.86 × 42,232.65
  4. Step 4: Simplify right side
    78,043.29x = 4,548,408,259.78
  5. Step 5: Solve for x
    x = 4,548,408,259.78/78,043.29
  6. Step 6: Final answer
    x = 58,280.58

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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.