Home / 78,987.65-118,477.83-19,822.01

Finding the Fourth Proportional to 78,987.65, 118,477.83 and 19,822.01

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Solution

The fourth proportional to 78,987.65, 118,477.83 and 19,822.01 is: 29,732.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,987.65 : 118,477.83 = 19,822.01 : x
  2. Step 2: Convert to fraction form
    78,987.65/118,477.83 = 19,822.01/x
  3. Step 3: Cross multiply
    78,987.65x = 118,477.83 × 19,822.01
  4. Step 4: Simplify right side
    78,987.65x = 2,348,468,731.04
  5. Step 5: Solve for x
    x = 2,348,468,731.04/78,987.65
  6. Step 6: Final answer
    x = 29,732.10

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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.