Home / 40,764.40-61,155.08-12,686.48

Finding the Fourth Proportional to 40,764.40, 61,155.08 and 12,686.48

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Solution

The fourth proportional to 40,764.40, 61,155.08 and 12,686.48 is: 19,032.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,764.40 : 61,155.08 = 12,686.48 : x
  2. Step 2: Convert to fraction form
    40,764.40/61,155.08 = 12,686.48/x
  3. Step 3: Cross multiply
    40,764.40x = 61,155.08 × 12,686.48
  4. Step 4: Simplify right side
    40,764.40x = 775,842,699.32
  5. Step 5: Solve for x
    x = 775,842,699.32/40,764.40
  6. Step 6: Final answer
    x = 19,032.36

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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.