Home / 85,467.15-128,214.63-26,302.86

Finding the Fourth Proportional to 85,467.15, 128,214.63 and 26,302.86

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Solution

The fourth proportional to 85,467.15, 128,214.63 and 26,302.86 is: 39,458.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,467.15 : 128,214.63 = 26,302.86 : x
  2. Step 2: Convert to fraction form
    85,467.15/128,214.63 = 26,302.86/x
  3. Step 3: Cross multiply
    85,467.15x = 128,214.63 × 26,302.86
  4. Step 4: Simplify right side
    85,467.15x = 3,372,411,462.84
  5. Step 5: Solve for x
    x = 3,372,411,462.84/85,467.15
  6. Step 6: Final answer
    x = 39,458.57

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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.