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Finding the Fourth Proportional to 72,325.65, 99,808.28 and 40,495.69

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Solution

The fourth proportional to 72,325.65, 99,808.28 and 40,495.69 is: 55,883.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,325.65 : 99,808.28 = 40,495.69 : x
  2. Step 2: Convert to fraction form
    72,325.65/99,808.28 = 40,495.69/x
  3. Step 3: Cross multiply
    72,325.65x = 99,808.28 × 40,495.69
  4. Step 4: Simplify right side
    72,325.65x = 4,041,805,166.31
  5. Step 5: Solve for x
    x = 4,041,805,166.31/72,325.65
  6. Step 6: Final answer
    x = 55,883.43

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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.