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Finding the Fourth Proportional to 72,302.76, 99,776.76 and 40,471.62

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Solution

The fourth proportional to 72,302.76, 99,776.76 and 40,471.62 is: 55,850.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,302.76 : 99,776.76 = 40,471.62 : x
  2. Step 2: Convert to fraction form
    72,302.76/99,776.76 = 40,471.62/x
  3. Step 3: Cross multiply
    72,302.76x = 99,776.76 × 40,471.62
  4. Step 4: Simplify right side
    72,302.76x = 4,038,127,115.55
  5. Step 5: Solve for x
    x = 4,038,127,115.55/72,302.76
  6. Step 6: Final answer
    x = 55,850.25

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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.