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Finding the Fourth Proportional to 56,908.60, 78,523.50 and 48,938.20

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Solution

The fourth proportional to 56,908.60, 78,523.50 and 48,938.20 is: 67,525.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,908.60 : 78,523.50 = 48,938.20 : x
  2. Step 2: Convert to fraction form
    56,908.60/78,523.50 = 48,938.20/x
  3. Step 3: Cross multiply
    56,908.60x = 78,523.50 × 48,938.20
  4. Step 4: Simplify right side
    56,908.60x = 3,842,798,747.70
  5. Step 5: Solve for x
    x = 3,842,798,747.70/56,908.60
  6. Step 6: Final answer
    x = 67,525.80

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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.