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Finding the Fourth Proportional to 75,044.42, 103,019 and 64,415.60

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Solution

The fourth proportional to 75,044.42, 103,019 and 64,415.60 is: 88,428.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,044.42 : 103,019 = 64,415.60 : x
  2. Step 2: Convert to fraction form
    75,044.42/103,019 = 64,415.60/x
  3. Step 3: Cross multiply
    75,044.42x = 103,019 × 64,415.60
  4. Step 4: Simplify right side
    75,044.42x = 6,636,030,696.40
  5. Step 5: Solve for x
    x = 6,636,030,696.40/75,044.42
  6. Step 6: Final answer
    x = 88,428.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.