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Finding the Fourth Proportional to 92,962.62, 128,285.75 and 52,689.40

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Solution

The fourth proportional to 92,962.62, 128,285.75 and 52,689.40 is: 72,709.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,962.62 : 128,285.75 = 52,689.40 : x
  2. Step 2: Convert to fraction form
    92,962.62/128,285.75 = 52,689.40/x
  3. Step 3: Cross multiply
    92,962.62x = 128,285.75 × 52,689.40
  4. Step 4: Simplify right side
    92,962.62x = 6,759,299,196.05
  5. Step 5: Solve for x
    x = 6,759,299,196.05/92,962.62
  6. Step 6: Final answer
    x = 72,709.86

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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.