Home / 85,429.55-128,156.58-26,270.19

Finding the Fourth Proportional to 85,429.55, 128,156.58 and 26,270.19

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Solution

The fourth proportional to 85,429.55, 128,156.58 and 26,270.19 is: 39,409.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,429.55 : 128,156.58 = 26,270.19 : x
  2. Step 2: Convert to fraction form
    85,429.55/128,156.58 = 26,270.19/x
  3. Step 3: Cross multiply
    85,429.55x = 128,156.58 × 26,270.19
  4. Step 4: Simplify right side
    85,429.55x = 3,366,697,706.35
  5. Step 5: Solve for x
    x = 3,366,697,706.35/85,429.55
  6. Step 6: Final answer
    x = 39,409.05

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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.