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Finding the Fourth Proportional to 89,880.94, 124,039.64 and 51,652.79

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Solution

The fourth proportional to 89,880.94, 124,039.64 and 51,652.79 is: 71,283.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,880.94 : 124,039.64 = 51,652.79 : x
  2. Step 2: Convert to fraction form
    89,880.94/124,039.64 = 51,652.79/x
  3. Step 3: Cross multiply
    89,880.94x = 124,039.64 × 51,652.79
  4. Step 4: Simplify right side
    89,880.94x = 6,406,992,985.53
  5. Step 5: Solve for x
    x = 6,406,992,985.53/89,880.94
  6. Step 6: Final answer
    x = 71,283.11

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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.