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Finding the Fourth Proportional to 61,809.92, 85,294.12 and 36,312.32

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Solution

The fourth proportional to 61,809.92, 85,294.12 and 36,312.32 is: 50,108.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,809.92 : 85,294.12 = 36,312.32 : x
  2. Step 2: Convert to fraction form
    61,809.92/85,294.12 = 36,312.32/x
  3. Step 3: Cross multiply
    61,809.92x = 85,294.12 × 36,312.32
  4. Step 4: Simplify right side
    61,809.92x = 3,097,227,379.56
  5. Step 5: Solve for x
    x = 3,097,227,379.56/61,809.92
  6. Step 6: Final answer
    x = 50,108.90

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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.