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Finding the Fourth Proportional to 48,656.40, 72,984.60 and 40,783.20

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Solution

The fourth proportional to 48,656.40, 72,984.60 and 40,783.20 is: 61,174.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,656.40 : 72,984.60 = 40,783.20 : x
  2. Step 2: Convert to fraction form
    48,656.40/72,984.60 = 40,783.20/x
  3. Step 3: Cross multiply
    48,656.40x = 72,984.60 × 40,783.20
  4. Step 4: Simplify right side
    48,656.40x = 2,976,545,538.72
  5. Step 5: Solve for x
    x = 2,976,545,538.72/48,656.40
  6. Step 6: Final answer
    x = 61,174.80

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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.