Home / 85,484.68-128,239.14-26,325.16

Finding the Fourth Proportional to 85,484.68, 128,239.14 and 26,325.16

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Solution

The fourth proportional to 85,484.68, 128,239.14 and 26,325.16 is: 39,491.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,484.68 : 128,239.14 = 26,325.16 : x
  2. Step 2: Convert to fraction form
    85,484.68/128,239.14 = 26,325.16/x
  3. Step 3: Cross multiply
    85,484.68x = 128,239.14 × 26,325.16
  4. Step 4: Simplify right side
    85,484.68x = 3,375,915,878.76
  5. Step 5: Solve for x
    x = 3,375,915,878.76/85,484.68
  6. Step 6: Final answer
    x = 39,491.47

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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.