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Finding the Fourth Proportional to 90,918.98, 125,459.69 and 52,679.98

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Solution

The fourth proportional to 90,918.98, 125,459.69 and 52,679.98 is: 72,693.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,918.98 : 125,459.69 = 52,679.98 : x
  2. Step 2: Convert to fraction form
    90,918.98/125,459.69 = 52,679.98/x
  3. Step 3: Cross multiply
    90,918.98x = 125,459.69 × 52,679.98
  4. Step 4: Simplify right side
    90,918.98x = 6,609,213,382.96
  5. Step 5: Solve for x
    x = 6,609,213,382.96/90,918.98
  6. Step 6: Final answer
    x = 72,693.44

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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.