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Finding the Fourth Proportional to 58,425.57, 87,626.05 and 20,987.78

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Solution

The fourth proportional to 58,425.57, 87,626.05 and 20,987.78 is: 31,477.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,425.57 : 87,626.05 = 20,987.78 : x
  2. Step 2: Convert to fraction form
    58,425.57/87,626.05 = 20,987.78/x
  3. Step 3: Cross multiply
    58,425.57x = 87,626.05 × 20,987.78
  4. Step 4: Simplify right side
    58,425.57x = 1,839,075,769.07
  5. Step 5: Solve for x
    x = 1,839,075,769.07/58,425.57
  6. Step 6: Final answer
    x = 31,477.24

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1.5x scale

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.