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Finding the Fourth Proportional to 139,739,005.72, 209,610,681.06 and 41,380,662.01

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Solution

The fourth proportional to 139,739,005.72, 209,610,681.06 and 41,380,662.01 is: 62,071,636.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,739,005.72 : 209,610,681.06 = 41,380,662.01 : x
  2. Step 2: Convert to fraction form
    139,739,005.72/209,610,681.06 = 41,380,662.01/x
  3. Step 3: Cross multiply
    139,739,005.72x = 209,610,681.06 × 41,380,662.01
  4. Step 4: Simplify right side
    139,739,005.72x = 8,673,828,746,242,324
  5. Step 5: Solve for x
    x = 8,673,828,746,242,324/139,739,005.72
  6. Step 6: Final answer
    x = 62,071,636.34

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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.