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Finding the Fourth Proportional to 41,985.40, 62,978.10 and 41,985.40

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Solution

The fourth proportional to 41,985.40, 62,978.10 and 41,985.40 is: 62,978.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,985.40 : 62,978.10 = 41,985.40 : x
  2. Step 2: Convert to fraction form
    41,985.40/62,978.10 = 41,985.40/x
  3. Step 3: Cross multiply
    41,985.40x = 62,978.10 × 41,985.40
  4. Step 4: Simplify right side
    41,985.40x = 2,644,160,719.74
  5. Step 5: Solve for x
    x = 2,644,160,719.74/41,985.40
  6. Step 6: Final answer
    x = 62,978.10

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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.