Home / 85,931.32-128,887.43-26,762.04

Finding the Fourth Proportional to 85,931.32, 128,887.43 and 26,762.04

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Solution

The fourth proportional to 85,931.32, 128,887.43 and 26,762.04 is: 40,140.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,931.32 : 128,887.43 = 26,762.04 : x
  2. Step 2: Convert to fraction form
    85,931.32/128,887.43 = 26,762.04/x
  3. Step 3: Cross multiply
    85,931.32x = 128,887.43 × 26,762.04
  4. Step 4: Simplify right side
    85,931.32x = 3,449,290,557.16
  5. Step 5: Solve for x
    x = 3,449,290,557.16/85,931.32
  6. Step 6: Final answer
    x = 40,140.09

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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.