Home / 42,726.36-64,129.76-21,681.50

Finding the Fourth Proportional to 42,726.36, 64,129.76 and 21,681.50

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Solution

The fourth proportional to 42,726.36, 64,129.76 and 21,681.50 is: 32,542.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,726.36 : 64,129.76 = 21,681.50 : x
  2. Step 2: Convert to fraction form
    42,726.36/64,129.76 = 21,681.50/x
  3. Step 3: Cross multiply
    42,726.36x = 64,129.76 × 21,681.50
  4. Step 4: Simplify right side
    42,726.36x = 1,390,429,391.44
  5. Step 5: Solve for x
    x = 1,390,429,391.44/42,726.36
  6. Step 6: Final answer
    x = 32,542.66

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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.