Home / 21,101,999.40-31,652,999.10-5,145,647.40

Finding the Fourth Proportional to 21,101,999.40, 31,652,999.10 and 5,145,647.40

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Solution

The fourth proportional to 21,101,999.40, 31,652,999.10 and 5,145,647.40 is: 7,718,471.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101,999.40 : 31,652,999.10 = 5,145,647.40 : x
  2. Step 2: Convert to fraction form
    21,101,999.40/31,652,999.10 = 5,145,647.40/x
  3. Step 3: Cross multiply
    21,101,999.40x = 31,652,999.10 × 5,145,647.40
  4. Step 4: Simplify right side
    21,101,999.40x = 162,875,172,521,117.38
  5. Step 5: Solve for x
    x = 162,875,172,521,117.38/21,101,999.40
  6. Step 6: Final answer
    x = 7,718,471.10

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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.