Home / 78,563.03-108,416.78-42,753.03

Finding the Fourth Proportional to 78,563.03, 108,416.78 and 42,753.03

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Solution

The fourth proportional to 78,563.03, 108,416.78 and 42,753.03 is: 58,999.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,563.03 : 108,416.78 = 42,753.03 : x
  2. Step 2: Convert to fraction form
    78,563.03/108,416.78 = 42,753.03/x
  3. Step 3: Cross multiply
    78,563.03x = 108,416.78 × 42,753.03
  4. Step 4: Simplify right side
    78,563.03x = 4,635,146,361.29
  5. Step 5: Solve for x
    x = 4,635,146,361.29/78,563.03
  6. Step 6: Final answer
    x = 58,999.08

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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.