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Finding the Fourth Proportional to 88,145.92, 121,657.80 and 50,420.08

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Solution

The fourth proportional to 88,145.92, 121,657.80 and 50,420.08 is: 69,589.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,145.92 : 121,657.80 = 50,420.08 : x
  2. Step 2: Convert to fraction form
    88,145.92/121,657.80 = 50,420.08/x
  3. Step 3: Cross multiply
    88,145.92x = 121,657.80 × 50,420.08
  4. Step 4: Simplify right side
    88,145.92x = 6,133,996,008.62
  5. Step 5: Solve for x
    x = 6,133,996,008.62/88,145.92
  6. Step 6: Final answer
    x = 69,589.11

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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.