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Finding the Fourth Proportional to 70,336,460.80, 105,529,574.40 and 67,848,140.80

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Solution

The fourth proportional to 70,336,460.80, 105,529,574.40 and 67,848,140.80 is: 101,796,214.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,336,460.80 : 105,529,574.40 = 67,848,140.80 : x
  2. Step 2: Convert to fraction form
    70,336,460.80/105,529,574.40 = 67,848,140.80/x
  3. Step 3: Cross multiply
    70,336,460.80x = 105,529,574.40 × 67,848,140.80
  4. Step 4: Simplify right side
    70,336,460.80x = 7,159,985,422,455,276
  5. Step 5: Solve for x
    x = 7,159,985,422,455,276/70,336,460.80
  6. Step 6: Final answer
    x = 101,796,214.10

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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.