Home / 72,105,312.12-108,092,008.26-31,139,127.96

Finding the Fourth Proportional to 72,105,312.12, 108,092,008.26 and 31,139,127.96

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Solution

The fourth proportional to 72,105,312.12, 108,092,008.26 and 31,139,127.96 is: 46,680,206.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,105,312.12 : 108,092,008.26 = 31,139,127.96 : x
  2. Step 2: Convert to fraction form
    72,105,312.12/108,092,008.26 = 31,139,127.96/x
  3. Step 3: Cross multiply
    72,105,312.12x = 108,092,008.26 × 31,139,127.96
  4. Step 4: Simplify right side
    72,105,312.12x = 3,365,890,876,661,517
  5. Step 5: Solve for x
    x = 3,365,890,876,661,517/72,105,312.12
  6. Step 6: Final answer
    x = 46,680,206.74

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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.