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Finding the Fourth Proportional to 72,149.76, 99,532.80 and 46,990.08

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Solution

The fourth proportional to 72,149.76, 99,532.80 and 46,990.08 is: 64,824.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,149.76 : 99,532.80 = 46,990.08 : x
  2. Step 2: Convert to fraction form
    72,149.76/99,532.80 = 46,990.08/x
  3. Step 3: Cross multiply
    72,149.76x = 99,532.80 × 46,990.08
  4. Step 4: Simplify right side
    72,149.76x = 4,677,054,234.62
  5. Step 5: Solve for x
    x = 4,677,054,234.62/72,149.76
  6. Step 6: Final answer
    x = 64,824.25

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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.