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Finding the Fourth Proportional to 61,366.59, 84,686.94 and 40,145.87

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Solution

The fourth proportional to 61,366.59, 84,686.94 and 40,145.87 is: 55,401.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,366.59 : 84,686.94 = 40,145.87 : x
  2. Step 2: Convert to fraction form
    61,366.59/84,686.94 = 40,145.87/x
  3. Step 3: Cross multiply
    61,366.59x = 84,686.94 × 40,145.87
  4. Step 4: Simplify right side
    61,366.59x = 3,399,830,460.50
  5. Step 5: Solve for x
    x = 3,399,830,460.50/61,366.59
  6. Step 6: Final answer
    x = 55,401.98

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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.