Home / 58,075.28-87,151.68-21,139.28

Finding the Fourth Proportional to 58,075.28, 87,151.68 and 21,139.28

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Solution

The fourth proportional to 58,075.28, 87,151.68 and 21,139.28 is: 31,723.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,075.28 : 87,151.68 = 21,139.28 : x
  2. Step 2: Convert to fraction form
    58,075.28/87,151.68 = 21,139.28/x
  3. Step 3: Cross multiply
    58,075.28x = 87,151.68 × 21,139.28
  4. Step 4: Simplify right side
    58,075.28x = 1,842,323,765.99
  5. Step 5: Solve for x
    x = 1,842,323,765.99/58,075.28
  6. Step 6: Final answer
    x = 31,723.03

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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.