Home / 42,772.65-64,159.01-11,607.90

Finding the Fourth Proportional to 42,772.65, 64,159.01 and 11,607.90

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Solution

The fourth proportional to 42,772.65, 64,159.01 and 11,607.90 is: 17,411.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,772.65 : 64,159.01 = 11,607.90 : x
  2. Step 2: Convert to fraction form
    42,772.65/64,159.01 = 11,607.90/x
  3. Step 3: Cross multiply
    42,772.65x = 64,159.01 × 11,607.90
  4. Step 4: Simplify right side
    42,772.65x = 744,751,372.18
  5. Step 5: Solve for x
    x = 744,751,372.18/42,772.65
  6. Step 6: Final answer
    x = 17,411.86

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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.