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Finding the Fourth Proportional to 61,401.20, 92,130.95 and 19,848.20

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Solution

The fourth proportional to 61,401.20, 92,130.95 and 19,848.20 is: 29,781.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,401.20 : 92,130.95 = 19,848.20 : x
  2. Step 2: Convert to fraction form
    61,401.20/92,130.95 = 19,848.20/x
  3. Step 3: Cross multiply
    61,401.20x = 92,130.95 × 19,848.20
  4. Step 4: Simplify right side
    61,401.20x = 1,828,632,961.89
  5. Step 5: Solve for x
    x = 1,828,632,961.89/61,401.20
  6. Step 6: Final answer
    x = 29,781.72

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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.