Home / 85,869.22-128,840.91-46,454.10

Finding the Fourth Proportional to 85,869.22, 128,840.91 and 46,454.10

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Solution

The fourth proportional to 85,869.22, 128,840.91 and 46,454.10 is: 69,701.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,869.22 : 128,840.91 = 46,454.10 : x
  2. Step 2: Convert to fraction form
    85,869.22/128,840.91 = 46,454.10/x
  3. Step 3: Cross multiply
    85,869.22x = 128,840.91 × 46,454.10
  4. Step 4: Simplify right side
    85,869.22x = 5,985,188,517.23
  5. Step 5: Solve for x
    x = 5,985,188,517.23/85,869.22
  6. Step 6: Final answer
    x = 69,701.21

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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.