Home / 42,663.51-58,870.40-28,491.75

Finding the Fourth Proportional to 42,663.51, 58,870.40 and 28,491.75

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Solution

The fourth proportional to 42,663.51, 58,870.40 and 28,491.75 is: 39,315.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,663.51 : 58,870.40 = 28,491.75 : x
  2. Step 2: Convert to fraction form
    42,663.51/58,870.40 = 28,491.75/x
  3. Step 3: Cross multiply
    42,663.51x = 58,870.40 × 28,491.75
  4. Step 4: Simplify right side
    42,663.51x = 1,677,320,576.74
  5. Step 5: Solve for x
    x = 1,677,320,576.74/42,663.51
  6. Step 6: Final answer
    x = 39,315.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.