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Finding the Fourth Proportional to 72,586.66, 100,166.98 and 40,756.90

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Solution

The fourth proportional to 72,586.66, 100,166.98 and 40,756.90 is: 56,243.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,586.66 : 100,166.98 = 40,756.90 : x
  2. Step 2: Convert to fraction form
    72,586.66/100,166.98 = 40,756.90/x
  3. Step 3: Cross multiply
    72,586.66x = 100,166.98 × 40,756.90
  4. Step 4: Simplify right side
    72,586.66x = 4,082,495,587.16
  5. Step 5: Solve for x
    x = 4,082,495,587.16/72,586.66
  6. Step 6: Final answer
    x = 56,243.06

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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.