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Finding the Fourth Proportional to 92,858.68, 128,145.90 and 50,417.56

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Solution

The fourth proportional to 92,858.68, 128,145.90 and 50,417.56 is: 69,576.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,858.68 : 128,145.90 = 50,417.56 : x
  2. Step 2: Convert to fraction form
    92,858.68/128,145.90 = 50,417.56/x
  3. Step 3: Cross multiply
    92,858.68x = 128,145.90 × 50,417.56
  4. Step 4: Simplify right side
    92,858.68x = 6,460,803,602.00
  5. Step 5: Solve for x
    x = 6,460,803,602.00/92,858.68
  6. Step 6: Final answer
    x = 69,576.73

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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.