Home / 61,639.90-85,061.66-34,781.72

Finding the Fourth Proportional to 61,639.90, 85,061.66 and 34,781.72

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Solution

The fourth proportional to 61,639.90, 85,061.66 and 34,781.72 is: 47,997.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,639.90 : 85,061.66 = 34,781.72 : x
  2. Step 2: Convert to fraction form
    61,639.90/85,061.66 = 34,781.72/x
  3. Step 3: Cross multiply
    61,639.90x = 85,061.66 × 34,781.72
  4. Step 4: Simplify right side
    61,639.90x = 2,958,590,840.86
  5. Step 5: Solve for x
    x = 2,958,590,840.86/61,639.90
  6. Step 6: Final answer
    x = 47,997.98

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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.