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Finding the Fourth Proportional to 76,008.80, 113,840.40 and 48,015.20

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Solution

The fourth proportional to 76,008.80, 113,840.40 and 48,015.20 is: 71,913.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,008.80 : 113,840.40 = 48,015.20 : x
  2. Step 2: Convert to fraction form
    76,008.80/113,840.40 = 48,015.20/x
  3. Step 3: Cross multiply
    76,008.80x = 113,840.40 × 48,015.20
  4. Step 4: Simplify right side
    76,008.80x = 5,466,069,574.08
  5. Step 5: Solve for x
    x = 5,466,069,574.08/76,008.80
  6. Step 6: Final answer
    x = 71,913.64

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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.