Home / 85,722.10-128,603.68-35,774.41

Finding the Fourth Proportional to 85,722.10, 128,603.68 and 35,774.41

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Solution

The fourth proportional to 85,722.10, 128,603.68 and 35,774.41 is: 53,670.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,722.10 : 128,603.68 = 35,774.41 : x
  2. Step 2: Convert to fraction form
    85,722.10/128,603.68 = 35,774.41/x
  3. Step 3: Cross multiply
    85,722.10x = 128,603.68 × 35,774.41
  4. Step 4: Simplify right side
    85,722.10x = 4,600,721,068.33
  5. Step 5: Solve for x
    x = 4,600,721,068.33/85,722.10
  6. Step 6: Final answer
    x = 53,670.19

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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.