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Finding the Fourth Proportional to 61,981.20, 92,971.80 and 37,049.40

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Solution

The fourth proportional to 61,981.20, 92,971.80 and 37,049.40 is: 55,574.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,981.20 : 92,971.80 = 37,049.40 : x
  2. Step 2: Convert to fraction form
    61,981.20/92,971.80 = 37,049.40/x
  3. Step 3: Cross multiply
    61,981.20x = 92,971.80 × 37,049.40
  4. Step 4: Simplify right side
    61,981.20x = 3,444,549,406.92
  5. Step 5: Solve for x
    x = 3,444,549,406.92/61,981.20
  6. Step 6: Final answer
    x = 55,574.10

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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.