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Finding the Fourth Proportional to 92,402.88, 138,606.48 and 30,078.24

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Solution

The fourth proportional to 92,402.88, 138,606.48 and 30,078.24 is: 45,118.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,402.88 : 138,606.48 = 30,078.24 : x
  2. Step 2: Convert to fraction form
    92,402.88/138,606.48 = 30,078.24/x
  3. Step 3: Cross multiply
    92,402.88x = 138,606.48 × 30,078.24
  4. Step 4: Simplify right side
    92,402.88x = 4,169,038,971.00
  5. Step 5: Solve for x
    x = 4,169,038,971.00/92,402.88
  6. Step 6: Final answer
    x = 45,118.06

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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.