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Finding the Fourth Proportional to 72,433.95, 108,623.61 and 30,316.95

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Solution

The fourth proportional to 72,433.95, 108,623.61 and 30,316.95 is: 45,463.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,433.95 : 108,623.61 = 30,316.95 : x
  2. Step 2: Convert to fraction form
    72,433.95/108,623.61 = 30,316.95/x
  3. Step 3: Cross multiply
    72,433.95x = 108,623.61 × 30,316.95
  4. Step 4: Simplify right side
    72,433.95x = 3,293,136,010.07
  5. Step 5: Solve for x
    x = 3,293,136,010.07/72,433.95
  6. Step 6: Final answer
    x = 45,463.99

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1.5x scale

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.