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Finding the Fourth Proportional to 85,373.46, 128,060.49 and 26,209.13

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Solution

The fourth proportional to 85,373.46, 128,060.49 and 26,209.13 is: 39,313.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,373.46 : 128,060.49 = 26,209.13 : x
  2. Step 2: Convert to fraction form
    85,373.46/128,060.49 = 26,209.13/x
  3. Step 3: Cross multiply
    85,373.46x = 128,060.49 × 26,209.13
  4. Step 4: Simplify right side
    85,373.46x = 3,356,353,389.97
  5. Step 5: Solve for x
    x = 3,356,353,389.97/85,373.46
  6. Step 6: Final answer
    x = 39,313.78

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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.