Home / 31,406,665.90-43,311,957.87-20,381,627.11

Finding the Fourth Proportional to 31,406,665.90, 43,311,957.87 and 20,381,627.11

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Solution

The fourth proportional to 31,406,665.90, 43,311,957.87 and 20,381,627.11 is: 28,107,669.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,406,665.90 : 43,311,957.87 = 20,381,627.11 : x
  2. Step 2: Convert to fraction form
    31,406,665.90/43,311,957.87 = 20,381,627.11/x
  3. Step 3: Cross multiply
    31,406,665.90x = 43,311,957.87 × 20,381,627.11
  4. Step 4: Simplify right side
    31,406,665.90x = 882,768,174,602,090
  5. Step 5: Solve for x
    x = 882,768,174,602,090/31,406,665.90
  6. Step 6: Final answer
    x = 28,107,669.16

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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.