Home / 42,897.70-64,309.65-20,726.53

Finding the Fourth Proportional to 42,897.70, 64,309.65 and 20,726.53

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Solution

The fourth proportional to 42,897.70, 64,309.65 and 20,726.53 is: 31,071.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,897.70 : 64,309.65 = 20,726.53 : x
  2. Step 2: Convert to fraction form
    42,897.70/64,309.65 = 20,726.53/x
  3. Step 3: Cross multiply
    42,897.70x = 64,309.65 × 20,726.53
  4. Step 4: Simplify right side
    42,897.70x = 1,332,916,013.26
  5. Step 5: Solve for x
    x = 1,332,916,013.26/42,897.70
  6. Step 6: Final answer
    x = 31,071.97

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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.