Home / 51,355.08-70,867.42-28,689.57

Finding the Fourth Proportional to 51,355.08, 70,867.42 and 28,689.57

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Solution

The fourth proportional to 51,355.08, 70,867.42 and 28,689.57 is: 39,590.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,355.08 : 70,867.42 = 28,689.57 : x
  2. Step 2: Convert to fraction form
    51,355.08/70,867.42 = 28,689.57/x
  3. Step 3: Cross multiply
    51,355.08x = 70,867.42 × 28,689.57
  4. Step 4: Simplify right side
    51,355.08x = 2,033,155,806.81
  5. Step 5: Solve for x
    x = 2,033,155,806.81/51,355.08
  6. Step 6: Final answer
    x = 39,590.16

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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.