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Finding the Fourth Proportional to 65,586.15, 90,506.90 and 36,907.40

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Solution

The fourth proportional to 65,586.15, 90,506.90 and 36,907.40 is: 50,931.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,586.15 : 90,506.90 = 36,907.40 : x
  2. Step 2: Convert to fraction form
    65,586.15/90,506.90 = 36,907.40/x
  3. Step 3: Cross multiply
    65,586.15x = 90,506.90 × 36,907.40
  4. Step 4: Simplify right side
    65,586.15x = 3,340,374,679.60
  5. Step 5: Solve for x
    x = 3,340,374,679.60/65,586.15
  6. Step 6: Final answer
    x = 50,931.10

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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.