Home / 91,780.65-126,786.33-70,829.19

Finding the Fourth Proportional to 91,780.65, 126,786.33 and 70,829.19

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Solution

The fourth proportional to 91,780.65, 126,786.33 and 70,829.19 is: 97,843.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,780.65 : 126,786.33 = 70,829.19 : x
  2. Step 2: Convert to fraction form
    91,780.65/126,786.33 = 70,829.19/x
  3. Step 3: Cross multiply
    91,780.65x = 126,786.33 × 70,829.19
  4. Step 4: Simplify right side
    91,780.65x = 8,980,173,056.97
  5. Step 5: Solve for x
    x = 8,980,173,056.97/91,780.65
  6. Step 6: Final answer
    x = 97,843.86

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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.