Home / 91,515.86-126,288.10-53,276.40

Finding the Fourth Proportional to 91,515.86, 126,288.10 and 53,276.40

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Solution

The fourth proportional to 91,515.86, 126,288.10 and 53,276.40 is: 73,519.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,515.86 : 126,288.10 = 53,276.40 : x
  2. Step 2: Convert to fraction form
    91,515.86/126,288.10 = 53,276.40/x
  3. Step 3: Cross multiply
    91,515.86x = 126,288.10 × 53,276.40
  4. Step 4: Simplify right side
    91,515.86x = 6,728,175,330.84
  5. Step 5: Solve for x
    x = 6,728,175,330.84/91,515.86
  6. Step 6: Final answer
    x = 73,519.23

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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.