Home / 85,606.53-128,427.29-29,439.34

Finding the Fourth Proportional to 85,606.53, 128,427.29 and 29,439.34

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Solution

The fourth proportional to 85,606.53, 128,427.29 and 29,439.34 is: 44,165.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,606.53 : 128,427.29 = 29,439.34 : x
  2. Step 2: Convert to fraction form
    85,606.53/128,427.29 = 29,439.34/x
  3. Step 3: Cross multiply
    85,606.53x = 128,427.29 × 29,439.34
  4. Step 4: Simplify right side
    85,606.53x = 3,780,814,655.59
  5. Step 5: Solve for x
    x = 3,780,814,655.59/85,606.53
  6. Step 6: Final answer
    x = 44,165.03

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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.