Home / 76,681.28-105,817.57-43,140.80

Finding the Fourth Proportional to 76,681.28, 105,817.57 and 43,140.80

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Solution

The fourth proportional to 76,681.28, 105,817.57 and 43,140.80 is: 59,532.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,681.28 : 105,817.57 = 43,140.80 : x
  2. Step 2: Convert to fraction form
    76,681.28/105,817.57 = 43,140.80/x
  3. Step 3: Cross multiply
    76,681.28x = 105,817.57 × 43,140.80
  4. Step 4: Simplify right side
    76,681.28x = 4,565,054,623.86
  5. Step 5: Solve for x
    x = 4,565,054,623.86/76,681.28
  6. Step 6: Final answer
    x = 59,532.84

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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.