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Finding the Fourth Proportional to 57,068.68, 78,754.56 and 31,918.12

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Solution

The fourth proportional to 57,068.68, 78,754.56 and 31,918.12 is: 44,046.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,068.68 : 78,754.56 = 31,918.12 : x
  2. Step 2: Convert to fraction form
    57,068.68/78,754.56 = 31,918.12/x
  3. Step 3: Cross multiply
    57,068.68x = 78,754.56 × 31,918.12
  4. Step 4: Simplify right side
    57,068.68x = 2,513,697,496.63
  5. Step 5: Solve for x
    x = 2,513,697,496.63/57,068.68
  6. Step 6: Final answer
    x = 44,046.88

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1.5x scale

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.