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Finding the Fourth Proportional to 85,954.72, 128,894.40 and 35,319.04

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Solution

The fourth proportional to 85,954.72, 128,894.40 and 35,319.04 is: 52,963.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,954.72 : 128,894.40 = 35,319.04 : x
  2. Step 2: Convert to fraction form
    85,954.72/128,894.40 = 35,319.04/x
  3. Step 3: Cross multiply
    85,954.72x = 128,894.40 × 35,319.04
  4. Step 4: Simplify right side
    85,954.72x = 4,552,426,469.38
  5. Step 5: Solve for x
    x = 4,552,426,469.38/85,954.72
  6. Step 6: Final answer
    x = 52,963.08

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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.