Home / 88,085.28-121,518-52,276.80

Finding the Fourth Proportional to 88,085.28, 121,518 and 52,276.80

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Solution

The fourth proportional to 88,085.28, 121,518 and 52,276.80 is: 72,118.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,085.28 : 121,518 = 52,276.80 : x
  2. Step 2: Convert to fraction form
    88,085.28/121,518 = 52,276.80/x
  3. Step 3: Cross multiply
    88,085.28x = 121,518 × 52,276.80
  4. Step 4: Simplify right side
    88,085.28x = 6,352,572,182.40
  5. Step 5: Solve for x
    x = 6,352,572,182.40/88,085.28
  6. Step 6: Final answer
    x = 72,118.43

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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.