Home / 90,816.76-136,225.02-28,492.12

Finding the Fourth Proportional to 90,816.76, 136,225.02 and 28,492.12

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Solution

The fourth proportional to 90,816.76, 136,225.02 and 28,492.12 is: 42,738.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,816.76 : 136,225.02 = 28,492.12 : x
  2. Step 2: Convert to fraction form
    90,816.76/136,225.02 = 28,492.12/x
  3. Step 3: Cross multiply
    90,816.76x = 136,225.02 × 28,492.12
  4. Step 4: Simplify right side
    90,816.76x = 3,881,339,616.84
  5. Step 5: Solve for x
    x = 3,881,339,616.84/90,816.76
  6. Step 6: Final answer
    x = 42,738.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.