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Finding the Fourth Proportional to 89,964, 124,150.32 and 50,220

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Solution

The fourth proportional to 89,964, 124,150.32 and 50,220 is: 69,303.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,964 : 124,150.32 = 50,220 : x
  2. Step 2: Convert to fraction form
    89,964/124,150.32 = 50,220/x
  3. Step 3: Cross multiply
    89,964x = 124,150.32 × 50,220
  4. Step 4: Simplify right side
    89,964x = 6,234,829,070.40
  5. Step 5: Solve for x
    x = 6,234,829,070.40/89,964
  6. Step 6: Final answer
    x = 69,303.60

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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.