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Finding the Fourth Proportional to 145,076.92, 217,590.30 and 38,461.58

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Solution

The fourth proportional to 145,076.92, 217,590.30 and 38,461.58 is: 57,685.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,076.92 : 217,590.30 = 38,461.58 : x
  2. Step 2: Convert to fraction form
    145,076.92/217,590.30 = 38,461.58/x
  3. Step 3: Cross multiply
    145,076.92x = 217,590.30 × 38,461.58
  4. Step 4: Simplify right side
    145,076.92x = 8,368,866,730.67
  5. Step 5: Solve for x
    x = 8,368,866,730.67/145,076.92
  6. Step 6: Final answer
    x = 57,685.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.