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Finding the Fourth Proportional to 9,966,611.60, 13,991,047.60 and 9,966,611.60

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Solution

The fourth proportional to 9,966,611.60, 13,991,047.60 and 9,966,611.60 is: 13,991,047.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,966,611.60 : 13,991,047.60 = 9,966,611.60 : x
  2. Step 2: Convert to fraction form
    9,966,611.60/13,991,047.60 = 9,966,611.60/x
  3. Step 3: Cross multiply
    9,966,611.60x = 13,991,047.60 × 9,966,611.60
  4. Step 4: Simplify right side
    9,966,611.60x = 139,443,337,306,312.16
  5. Step 5: Solve for x
    x = 139,443,337,306,312.16/9,966,611.60
  6. Step 6: Final answer
    x = 13,991,047.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.