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Finding the Fourth Proportional to 8,141,978.40, 12,212,967.60 and 8,016,007.20

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Solution

The fourth proportional to 8,141,978.40, 12,212,967.60 and 8,016,007.20 is: 12,024,010.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,141,978.40 : 12,212,967.60 = 8,016,007.20 : x
  2. Step 2: Convert to fraction form
    8,141,978.40/12,212,967.60 = 8,016,007.20/x
  3. Step 3: Cross multiply
    8,141,978.40x = 12,212,967.60 × 8,016,007.20
  4. Step 4: Simplify right side
    8,141,978.40x = 97,899,236,214,966.72
  5. Step 5: Solve for x
    x = 97,899,236,214,966.72/8,141,978.40
  6. Step 6: Final answer
    x = 12,024,010.80

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1.5x scale

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.