Home / 78,713.94-108,622.08-42,903.18

Finding the Fourth Proportional to 78,713.94, 108,622.08 and 42,903.18

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Solution

The fourth proportional to 78,713.94, 108,622.08 and 42,903.18 is: 59,204.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,713.94 : 108,622.08 = 42,903.18 : x
  2. Step 2: Convert to fraction form
    78,713.94/108,622.08 = 42,903.18/x
  3. Step 3: Cross multiply
    78,713.94x = 108,622.08 × 42,903.18
  4. Step 4: Simplify right side
    78,713.94x = 4,660,232,650.21
  5. Step 5: Solve for x
    x = 4,660,232,650.21/78,713.94
  6. Step 6: Final answer
    x = 59,204.67

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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.