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Finding the Fourth Proportional to 61,860, 85,379.52 and 35,004

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Solution

The fourth proportional to 61,860, 85,379.52 and 35,004 is: 48,312.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,860 : 85,379.52 = 35,004 : x
  2. Step 2: Convert to fraction form
    61,860/85,379.52 = 35,004/x
  3. Step 3: Cross multiply
    61,860x = 85,379.52 × 35,004
  4. Step 4: Simplify right side
    61,860x = 2,988,624,718.08
  5. Step 5: Solve for x
    x = 2,988,624,718.08/61,860
  6. Step 6: Final answer
    x = 48,312.72

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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.