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Finding the Fourth Proportional to 71,322,245.40, 106,983,368.10 and 45,792,082.20

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Solution

The fourth proportional to 71,322,245.40, 106,983,368.10 and 45,792,082.20 is: 68,688,123.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,322,245.40 : 106,983,368.10 = 45,792,082.20 : x
  2. Step 2: Convert to fraction form
    71,322,245.40/106,983,368.10 = 45,792,082.20/x
  3. Step 3: Cross multiply
    71,322,245.40x = 106,983,368.10 × 45,792,082.20
  4. Step 4: Simplify right side
    71,322,245.40x = 4,898,991,186,068,058
  5. Step 5: Solve for x
    x = 4,898,991,186,068,058/71,322,245.40
  6. Step 6: Final answer
    x = 68,688,123.30

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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.