Home / 76,680.90-105,817.05-43,140.42

Finding the Fourth Proportional to 76,680.90, 105,817.05 and 43,140.42

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Solution

The fourth proportional to 76,680.90, 105,817.05 and 43,140.42 is: 59,532.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,680.90 : 105,817.05 = 43,140.42 : x
  2. Step 2: Convert to fraction form
    76,680.90/105,817.05 = 43,140.42/x
  3. Step 3: Cross multiply
    76,680.90x = 105,817.05 × 43,140.42
  4. Step 4: Simplify right side
    76,680.90x = 4,564,991,980.16
  5. Step 5: Solve for x
    x = 4,564,991,980.16/76,680.90
  6. Step 6: Final answer
    x = 59,532.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.