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Finding the Fourth Proportional to 85,635.52, 128,465.54 and 26,475.77

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Solution

The fourth proportional to 85,635.52, 128,465.54 and 26,475.77 is: 39,717.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,635.52 : 128,465.54 = 26,475.77 : x
  2. Step 2: Convert to fraction form
    85,635.52/128,465.54 = 26,475.77/x
  3. Step 3: Cross multiply
    85,635.52x = 128,465.54 × 26,475.77
  4. Step 4: Simplify right side
    85,635.52x = 3,401,224,089.97
  5. Step 5: Solve for x
    x = 3,401,224,089.97/85,635.52
  6. Step 6: Final answer
    x = 39,717.45

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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.