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Finding the Fourth Proportional to 70,688.80, 106,033.20 and 64,007.20

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Solution

The fourth proportional to 70,688.80, 106,033.20 and 64,007.20 is: 96,010.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,688.80 : 106,033.20 = 64,007.20 : x
  2. Step 2: Convert to fraction form
    70,688.80/106,033.20 = 64,007.20/x
  3. Step 3: Cross multiply
    70,688.80x = 106,033.20 × 64,007.20
  4. Step 4: Simplify right side
    70,688.80x = 6,786,888,239.04
  5. Step 5: Solve for x
    x = 6,786,888,239.04/70,688.80
  6. Step 6: Final answer
    x = 96,010.80

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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.