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Finding the Fourth Proportional to 85,423.53, 128,147.53 and 26,264.17

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Solution

The fourth proportional to 85,423.53, 128,147.53 and 26,264.17 is: 39,400.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,423.53 : 128,147.53 = 26,264.17 : x
  2. Step 2: Convert to fraction form
    85,423.53/128,147.53 = 26,264.17/x
  3. Step 3: Cross multiply
    85,423.53x = 128,147.53 × 26,264.17
  4. Step 4: Simplify right side
    85,423.53x = 3,365,688,513.00
  5. Step 5: Solve for x
    x = 3,365,688,513.00/85,423.53
  6. Step 6: Final answer
    x = 39,400.02

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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.