Home / 70,336.12-105,431.28-43,980.36

Finding the Fourth Proportional to 70,336.12, 105,431.28 and 43,980.36

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Solution

The fourth proportional to 70,336.12, 105,431.28 and 43,980.36 is: 65,924.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,336.12 : 105,431.28 = 43,980.36 : x
  2. Step 2: Convert to fraction form
    70,336.12/105,431.28 = 43,980.36/x
  3. Step 3: Cross multiply
    70,336.12x = 105,431.28 × 43,980.36
  4. Step 4: Simplify right side
    70,336.12x = 4,636,905,649.66
  5. Step 5: Solve for x
    x = 4,636,905,649.66/70,336.12
  6. Step 6: Final answer
    x = 65,924.96

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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.