Home / 31,781,878.96-47,672,979.13-9,920,425.64

Finding the Fourth Proportional to 31,781,878.96, 47,672,979.13 and 9,920,425.64

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Solution

The fourth proportional to 31,781,878.96, 47,672,979.13 and 9,920,425.64 is: 14,880,688.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,781,878.96 : 47,672,979.13 = 9,920,425.64 : x
  2. Step 2: Convert to fraction form
    31,781,878.96/47,672,979.13 = 9,920,425.64/x
  3. Step 3: Cross multiply
    31,781,878.96x = 47,672,979.13 × 9,920,425.64
  4. Step 4: Simplify right side
    31,781,878.96x = 472,936,244,564,773.38
  5. Step 5: Solve for x
    x = 472,936,244,564,773.38/31,781,878.96
  6. Step 6: Final answer
    x = 14,880,688.62

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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.