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Finding the Fourth Proportional to 88,393.63, 121,985.95 and 50,154.80

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Solution

The fourth proportional to 88,393.63, 121,985.95 and 50,154.80 is: 69,215.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,393.63 : 121,985.95 = 50,154.80 : x
  2. Step 2: Convert to fraction form
    88,393.63/121,985.95 = 50,154.80/x
  3. Step 3: Cross multiply
    88,393.63x = 121,985.95 × 50,154.80
  4. Step 4: Simplify right side
    88,393.63x = 6,118,180,745.48
  5. Step 5: Solve for x
    x = 6,118,180,745.48/88,393.63
  6. Step 6: Final answer
    x = 69,215.18

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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.