Home / 85,489.50-118,008.42-76,521.18

Finding the Fourth Proportional to 85,489.50, 118,008.42 and 76,521.18

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Solution

The fourth proportional to 85,489.50, 118,008.42 and 76,521.18 is: 105,628.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,489.50 : 118,008.42 = 76,521.18 : x
  2. Step 2: Convert to fraction form
    85,489.50/118,008.42 = 76,521.18/x
  3. Step 3: Cross multiply
    85,489.50x = 118,008.42 × 76,521.18
  4. Step 4: Simplify right side
    85,489.50x = 9,030,143,548.34
  5. Step 5: Solve for x
    x = 9,030,143,548.34/85,489.50
  6. Step 6: Final answer
    x = 105,628.69

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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.