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Finding the Fourth Proportional to 92,787.03, 128,045.45 and 50,345.55

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Solution

The fourth proportional to 92,787.03, 128,045.45 and 50,345.55 is: 69,476.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,787.03 : 128,045.45 = 50,345.55 : x
  2. Step 2: Convert to fraction form
    92,787.03/128,045.45 = 50,345.55/x
  3. Step 3: Cross multiply
    92,787.03x = 128,045.45 × 50,345.55
  4. Step 4: Simplify right side
    92,787.03x = 6,446,518,353.52
  5. Step 5: Solve for x
    x = 6,446,518,353.52/92,787.03
  6. Step 6: Final answer
    x = 69,476.50

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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.