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Finding the Fourth Proportional to 89,866, 124,014.32 and 49,580.64

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Solution

The fourth proportional to 89,866, 124,014.32 and 49,580.64 is: 68,420.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,866 : 124,014.32 = 49,580.64 : x
  2. Step 2: Convert to fraction form
    89,866/124,014.32 = 49,580.64/x
  3. Step 3: Cross multiply
    89,866x = 124,014.32 × 49,580.64
  4. Step 4: Simplify right side
    89,866x = 6,148,709,354.76
  5. Step 5: Solve for x
    x = 6,148,709,354.76/89,866
  6. Step 6: Final answer
    x = 68,420.86

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1.5x scale

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.