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Finding the Fourth Proportional to 72,657.29, 100,276.02 and 40,825.50

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Solution

The fourth proportional to 72,657.29, 100,276.02 and 40,825.50 is: 56,344.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,657.29 : 100,276.02 = 40,825.50 : x
  2. Step 2: Convert to fraction form
    72,657.29/100,276.02 = 40,825.50/x
  3. Step 3: Cross multiply
    72,657.29x = 100,276.02 × 40,825.50
  4. Step 4: Simplify right side
    72,657.29x = 4,093,818,654.51
  5. Step 5: Solve for x
    x = 4,093,818,654.51/72,657.29
  6. Step 6: Final answer
    x = 56,344.22

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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.