Home / 78,783.16-118,145.30-32,020.28

Finding the Fourth Proportional to 78,783.16, 118,145.30 and 32,020.28

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Solution

The fourth proportional to 78,783.16, 118,145.30 and 32,020.28 is: 48,018.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,783.16 : 118,145.30 = 32,020.28 : x
  2. Step 2: Convert to fraction form
    78,783.16/118,145.30 = 32,020.28/x
  3. Step 3: Cross multiply
    78,783.16x = 118,145.30 × 32,020.28
  4. Step 4: Simplify right side
    78,783.16x = 3,783,045,586.68
  5. Step 5: Solve for x
    x = 3,783,045,586.68/78,783.16
  6. Step 6: Final answer
    x = 48,018.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.