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Finding the Fourth Proportional to 65,420.30, 90,274.88 and 37,125.98

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Solution

The fourth proportional to 65,420.30, 90,274.88 and 37,125.98 is: 51,230.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,420.30 : 90,274.88 = 37,125.98 : x
  2. Step 2: Convert to fraction form
    65,420.30/90,274.88 = 37,125.98/x
  3. Step 3: Cross multiply
    65,420.30x = 90,274.88 × 37,125.98
  4. Step 4: Simplify right side
    65,420.30x = 3,351,543,389.38
  5. Step 5: Solve for x
    x = 3,351,543,389.38/65,420.30
  6. Step 6: Final answer
    x = 51,230.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.