Home / 85,926.35-128,888.10-35,315.12

Finding the Fourth Proportional to 85,926.35, 128,888.10 and 35,315.12

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Solution

The fourth proportional to 85,926.35, 128,888.10 and 35,315.12 is: 52,972.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,926.35 : 128,888.10 = 35,315.12 : x
  2. Step 2: Convert to fraction form
    85,926.35/128,888.10 = 35,315.12/x
  3. Step 3: Cross multiply
    85,926.35x = 128,888.10 × 35,315.12
  4. Step 4: Simplify right side
    85,926.35x = 4,551,698,484.14
  5. Step 5: Solve for x
    x = 4,551,698,484.14/85,926.35
  6. Step 6: Final answer
    x = 52,972.09

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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.