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Finding the Fourth Proportional to 66,089.68, 98,984.05 and 51,768.76

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Solution

The fourth proportional to 66,089.68, 98,984.05 and 51,768.76 is: 77,535.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,089.68 : 98,984.05 = 51,768.76 : x
  2. Step 2: Convert to fraction form
    66,089.68/98,984.05 = 51,768.76/x
  3. Step 3: Cross multiply
    66,089.68x = 98,984.05 × 51,768.76
  4. Step 4: Simplify right side
    66,089.68x = 5,124,281,528.28
  5. Step 5: Solve for x
    x = 5,124,281,528.28/66,089.68
  6. Step 6: Final answer
    x = 77,535.28

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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.