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Finding the Fourth Proportional to 61,652.70, 92,479.05 and 42,990.30

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Solution

The fourth proportional to 61,652.70, 92,479.05 and 42,990.30 is: 64,485.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,652.70 : 92,479.05 = 42,990.30 : x
  2. Step 2: Convert to fraction form
    61,652.70/92,479.05 = 42,990.30/x
  3. Step 3: Cross multiply
    61,652.70x = 92,479.05 × 42,990.30
  4. Step 4: Simplify right side
    61,652.70x = 3,975,702,103.22
  5. Step 5: Solve for x
    x = 3,975,702,103.22/61,652.70
  6. Step 6: Final answer
    x = 64,485.45

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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.