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Finding the Fourth Proportional to 71,318,804.10, 106,978,206.15 and 70,646,957.70

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Solution

The fourth proportional to 71,318,804.10, 106,978,206.15 and 70,646,957.70 is: 105,970,436.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,318,804.10 : 106,978,206.15 = 70,646,957.70 : x
  2. Step 2: Convert to fraction form
    71,318,804.10/106,978,206.15 = 70,646,957.70/x
  3. Step 3: Cross multiply
    71,318,804.10x = 106,978,206.15 × 70,646,957.70
  4. Step 4: Simplify right side
    71,318,804.10x = 7,557,684,804,700,931
  5. Step 5: Solve for x
    x = 7,557,684,804,700,931/71,318,804.10
  6. Step 6: Final answer
    x = 105,970,436.55

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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.