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Finding the Fourth Proportional to 85,792.63, 128,687.12 and 23,463.13

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Solution

The fourth proportional to 85,792.63, 128,687.12 and 23,463.13 is: 35,194.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,792.63 : 128,687.12 = 23,463.13 : x
  2. Step 2: Convert to fraction form
    85,792.63/128,687.12 = 23,463.13/x
  3. Step 3: Cross multiply
    85,792.63x = 128,687.12 × 23,463.13
  4. Step 4: Simplify right side
    85,792.63x = 3,019,402,625.89
  5. Step 5: Solve for x
    x = 3,019,402,625.89/85,792.63
  6. Step 6: Final answer
    x = 35,194.20

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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.