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Finding the Fourth Proportional to 86,340.76, 119,158.78 and 50,528.64

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Solution

The fourth proportional to 86,340.76, 119,158.78 and 50,528.64 is: 69,734.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,340.76 : 119,158.78 = 50,528.64 : x
  2. Step 2: Convert to fraction form
    86,340.76/119,158.78 = 50,528.64/x
  3. Step 3: Cross multiply
    86,340.76x = 119,158.78 × 50,528.64
  4. Step 4: Simplify right side
    86,340.76x = 6,020,931,097.46
  5. Step 5: Solve for x
    x = 6,020,931,097.46/86,340.76
  6. Step 6: Final answer
    x = 69,734.52

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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.