Home / 91,315.10-126,017.53-51,028.96

Finding the Fourth Proportional to 91,315.10, 126,017.53 and 51,028.96

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Solution

The fourth proportional to 91,315.10, 126,017.53 and 51,028.96 is: 70,421.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,315.10 : 126,017.53 = 51,028.96 : x
  2. Step 2: Convert to fraction form
    91,315.10/126,017.53 = 51,028.96/x
  3. Step 3: Cross multiply
    91,315.10x = 126,017.53 × 51,028.96
  4. Step 4: Simplify right side
    91,315.10x = 6,430,543,055.05
  5. Step 5: Solve for x
    x = 6,430,543,055.05/91,315.10
  6. Step 6: Final answer
    x = 70,421.47

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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.