Home / 91,509.12-126,276.74-51,216.10

Finding the Fourth Proportional to 91,509.12, 126,276.74 and 51,216.10

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Solution

The fourth proportional to 91,509.12, 126,276.74 and 51,216.10 is: 70,674.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,509.12 : 126,276.74 = 51,216.10 : x
  2. Step 2: Convert to fraction form
    91,509.12/126,276.74 = 51,216.10/x
  3. Step 3: Cross multiply
    91,509.12x = 126,276.74 × 51,216.10
  4. Step 4: Simplify right side
    91,509.12x = 6,467,402,143.51
  5. Step 5: Solve for x
    x = 6,467,402,143.51/91,509.12
  6. Step 6: Final answer
    x = 70,674.95

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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.