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Finding the Fourth Proportional to 72,793.54, 100,455.04 and 40,962.47

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Solution

The fourth proportional to 72,793.54, 100,455.04 and 40,962.47 is: 56,528.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,793.54 : 100,455.04 = 40,962.47 : x
  2. Step 2: Convert to fraction form
    72,793.54/100,455.04 = 40,962.47/x
  3. Step 3: Cross multiply
    72,793.54x = 100,455.04 × 40,962.47
  4. Step 4: Simplify right side
    72,793.54x = 4,114,885,957.67
  5. Step 5: Solve for x
    x = 4,114,885,957.67/72,793.54
  6. Step 6: Final answer
    x = 56,528.18

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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.