Home / 78,305.28-117,457.56-22,145.28

Finding the Fourth Proportional to 78,305.28, 117,457.56 and 22,145.28

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Solution

The fourth proportional to 78,305.28, 117,457.56 and 22,145.28 is: 33,217.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,305.28 : 117,457.56 = 22,145.28 : x
  2. Step 2: Convert to fraction form
    78,305.28/117,457.56 = 22,145.28/x
  3. Step 3: Cross multiply
    78,305.28x = 117,457.56 × 22,145.28
  4. Step 4: Simplify right side
    78,305.28x = 2,601,130,554.32
  5. Step 5: Solve for x
    x = 2,601,130,554.32/78,305.28
  6. Step 6: Final answer
    x = 33,217.82

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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.