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Finding the Fourth Proportional to 71,400.16, 107,122.61 and 42,968.13

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Solution

The fourth proportional to 71,400.16, 107,122.61 and 42,968.13 is: 64,465.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,400.16 : 107,122.61 = 42,968.13 : x
  2. Step 2: Convert to fraction form
    71,400.16/107,122.61 = 42,968.13/x
  3. Step 3: Cross multiply
    71,400.16x = 107,122.61 × 42,968.13
  4. Step 4: Simplify right side
    71,400.16x = 4,602,858,072.03
  5. Step 5: Solve for x
    x = 4,602,858,072.03/71,400.16
  6. Step 6: Final answer
    x = 64,465.66

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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.