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Finding the Fourth Proportional to 90,492.72, 124,894.95 and 50,219.42

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Solution

The fourth proportional to 90,492.72, 124,894.95 and 50,219.42 is: 69,311.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,492.72 : 124,894.95 = 50,219.42 : x
  2. Step 2: Convert to fraction form
    90,492.72/124,894.95 = 50,219.42/x
  3. Step 3: Cross multiply
    90,492.72x = 124,894.95 × 50,219.42
  4. Step 4: Simplify right side
    90,492.72x = 6,272,151,839.67
  5. Step 5: Solve for x
    x = 6,272,151,839.67/90,492.72
  6. Step 6: Final answer
    x = 69,311.12

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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.