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Finding the Fourth Proportional to 92,974.68, 128,307.92 and 52,687.40

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Solution

The fourth proportional to 92,974.68, 128,307.92 and 52,687.40 is: 72,710.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,974.68 : 128,307.92 = 52,687.40 : x
  2. Step 2: Convert to fraction form
    92,974.68/128,307.92 = 52,687.40/x
  3. Step 3: Cross multiply
    92,974.68x = 128,307.92 × 52,687.40
  4. Step 4: Simplify right side
    92,974.68x = 6,760,210,704.21
  5. Step 5: Solve for x
    x = 6,760,210,704.21/92,974.68
  6. Step 6: Final answer
    x = 72,710.23

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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.