Home / 85,752.08-128,646.60-26,586.56

Finding the Fourth Proportional to 85,752.08, 128,646.60 and 26,586.56

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Solution

The fourth proportional to 85,752.08, 128,646.60 and 26,586.56 is: 39,885.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,752.08 : 128,646.60 = 26,586.56 : x
  2. Step 2: Convert to fraction form
    85,752.08/128,646.60 = 26,586.56/x
  3. Step 3: Cross multiply
    85,752.08x = 128,646.60 × 26,586.56
  4. Step 4: Simplify right side
    85,752.08x = 3,420,270,549.70
  5. Step 5: Solve for x
    x = 3,420,270,549.70/85,752.08
  6. Step 6: Final answer
    x = 39,885.57

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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.