Home / 85,014.12-127,521.29-31,705.29

Finding the Fourth Proportional to 85,014.12, 127,521.29 and 31,705.29

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Solution

The fourth proportional to 85,014.12, 127,521.29 and 31,705.29 is: 47,557.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,014.12 : 127,521.29 = 31,705.29 : x
  2. Step 2: Convert to fraction form
    85,014.12/127,521.29 = 31,705.29/x
  3. Step 3: Cross multiply
    85,014.12x = 127,521.29 × 31,705.29
  4. Step 4: Simplify right side
    85,014.12x = 4,043,099,381.55
  5. Step 5: Solve for x
    x = 4,043,099,381.55/85,014.12
  6. Step 6: Final answer
    x = 47,557.97

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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.