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Finding the Fourth Proportional to 56,459.58, 77,915.03 and 30,968.39

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Solution

The fourth proportional to 56,459.58, 77,915.03 and 30,968.39 is: 42,736.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,459.58 : 77,915.03 = 30,968.39 : x
  2. Step 2: Convert to fraction form
    56,459.58/77,915.03 = 30,968.39/x
  3. Step 3: Cross multiply
    56,459.58x = 77,915.03 × 30,968.39
  4. Step 4: Simplify right side
    56,459.58x = 2,412,902,491.48
  5. Step 5: Solve for x
    x = 2,412,902,491.48/56,459.58
  6. Step 6: Final answer
    x = 42,736.81

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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.