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Finding the Fourth Proportional to 90,988.84, 125,575.50 and 53,263

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Solution

The fourth proportional to 90,988.84, 125,575.50 and 53,263 is: 73,509.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,988.84 : 125,575.50 = 53,263 : x
  2. Step 2: Convert to fraction form
    90,988.84/125,575.50 = 53,263/x
  3. Step 3: Cross multiply
    90,988.84x = 125,575.50 × 53,263
  4. Step 4: Simplify right side
    90,988.84x = 6,688,527,856.50
  5. Step 5: Solve for x
    x = 6,688,527,856.50/90,988.84
  6. Step 6: Final answer
    x = 73,509.32

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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.