Home / 52,507.90-78,712.05-20,937.36

Finding the Fourth Proportional to 52,507.90, 78,712.05 and 20,937.36

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Solution

The fourth proportional to 52,507.90, 78,712.05 and 20,937.36 is: 31,386.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,507.90 : 78,712.05 = 20,937.36 : x
  2. Step 2: Convert to fraction form
    52,507.90/78,712.05 = 20,937.36/x
  3. Step 3: Cross multiply
    52,507.90x = 78,712.05 × 20,937.36
  4. Step 4: Simplify right side
    52,507.90x = 1,648,022,527.19
  5. Step 5: Solve for x
    x = 1,648,022,527.19/52,507.90
  6. Step 6: Final answer
    x = 31,386.18

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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.