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Finding the Fourth Proportional to 71,318,803.60, 106,978,205.40 and 70,646,957.20

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Solution

The fourth proportional to 71,318,803.60, 106,978,205.40 and 70,646,957.20 is: 105,970,435.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,318,803.60 : 106,978,205.40 = 70,646,957.20 : x
  2. Step 2: Convert to fraction form
    71,318,803.60/106,978,205.40 = 70,646,957.20/x
  3. Step 3: Cross multiply
    71,318,803.60x = 106,978,205.40 × 70,646,957.20
  4. Step 4: Simplify right side
    71,318,803.60x = 7,557,684,698,226,610
  5. Step 5: Solve for x
    x = 7,557,684,698,226,610/71,318,803.60
  6. Step 6: Final answer
    x = 105,970,435.80

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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.