Home / 78,124.28-107,811.68-43,199.24

Finding the Fourth Proportional to 78,124.28, 107,811.68 and 43,199.24

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Solution

The fourth proportional to 78,124.28, 107,811.68 and 43,199.24 is: 59,615.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,124.28 : 107,811.68 = 43,199.24 : x
  2. Step 2: Convert to fraction form
    78,124.28/107,811.68 = 43,199.24/x
  3. Step 3: Cross multiply
    78,124.28x = 107,811.68 × 43,199.24
  4. Step 4: Simplify right side
    78,124.28x = 4,657,382,639.12
  5. Step 5: Solve for x
    x = 4,657,382,639.12/78,124.28
  6. Step 6: Final answer
    x = 59,615.05

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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.