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Finding the Fourth Proportional to 64,347.80, 96,547.02 and 19,978.04

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Solution

The fourth proportional to 64,347.80, 96,547.02 and 19,978.04 is: 29,974.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,347.80 : 96,547.02 = 19,978.04 : x
  2. Step 2: Convert to fraction form
    64,347.80/96,547.02 = 19,978.04/x
  3. Step 3: Cross multiply
    64,347.80x = 96,547.02 × 19,978.04
  4. Step 4: Simplify right side
    64,347.80x = 1,928,820,227.44
  5. Step 5: Solve for x
    x = 1,928,820,227.44/64,347.80
  6. Step 6: Final answer
    x = 29,974.92

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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.