Home / 52,565.06-78,880.40-21,400.31

Finding the Fourth Proportional to 52,565.06, 78,880.40 and 21,400.31

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Solution

The fourth proportional to 52,565.06, 78,880.40 and 21,400.31 is: 32,113.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,565.06 : 78,880.40 = 21,400.31 : x
  2. Step 2: Convert to fraction form
    52,565.06/78,880.40 = 21,400.31/x
  3. Step 3: Cross multiply
    52,565.06x = 78,880.40 × 21,400.31
  4. Step 4: Simplify right side
    52,565.06x = 1,688,065,183.37
  5. Step 5: Solve for x
    x = 1,688,065,183.37/52,565.06
  6. Step 6: Final answer
    x = 32,113.82

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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.