Home / 74,656.10-102,989.12-47,777.06

Finding the Fourth Proportional to 74,656.10, 102,989.12 and 47,777.06

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Solution

The fourth proportional to 74,656.10, 102,989.12 and 47,777.06 is: 65,909.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,656.10 : 102,989.12 = 47,777.06 : x
  2. Step 2: Convert to fraction form
    74,656.10/102,989.12 = 47,777.06/x
  3. Step 3: Cross multiply
    74,656.10x = 102,989.12 × 47,777.06
  4. Step 4: Simplify right side
    74,656.10x = 4,920,517,365.59
  5. Step 5: Solve for x
    x = 4,920,517,365.59/74,656.10
  6. Step 6: Final answer
    x = 65,909.11

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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.