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Finding the Fourth Proportional to 60,649.40, 90,974.10 and 34,405.40

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Solution

The fourth proportional to 60,649.40, 90,974.10 and 34,405.40 is: 51,608.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,649.40 : 90,974.10 = 34,405.40 : x
  2. Step 2: Convert to fraction form
    60,649.40/90,974.10 = 34,405.40/x
  3. Step 3: Cross multiply
    60,649.40x = 90,974.10 × 34,405.40
  4. Step 4: Simplify right side
    60,649.40x = 3,130,000,300.14
  5. Step 5: Solve for x
    x = 3,130,000,300.14/60,649.40
  6. Step 6: Final answer
    x = 51,608.10

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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.