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Finding the Fourth Proportional to 140,003.65, 210,005.48 and 46,509.40

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Solution

The fourth proportional to 140,003.65, 210,005.48 and 46,509.40 is: 69,764.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,003.65 : 210,005.48 = 46,509.40 : x
  2. Step 2: Convert to fraction form
    140,003.65/210,005.48 = 46,509.40/x
  3. Step 3: Cross multiply
    140,003.65x = 210,005.48 × 46,509.40
  4. Step 4: Simplify right side
    140,003.65x = 9,767,228,871.51
  5. Step 5: Solve for x
    x = 9,767,228,871.51/140,003.65
  6. Step 6: Final answer
    x = 69,764.10

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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.