Home / 51,439.32-70,980.17-28,779.57

Finding the Fourth Proportional to 51,439.32, 70,980.17 and 28,779.57

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Solution

The fourth proportional to 51,439.32, 70,980.17 and 28,779.57 is: 39,712.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,439.32 : 70,980.17 = 28,779.57 : x
  2. Step 2: Convert to fraction form
    51,439.32/70,980.17 = 28,779.57/x
  3. Step 3: Cross multiply
    51,439.32x = 70,980.17 × 28,779.57
  4. Step 4: Simplify right side
    51,439.32x = 2,042,778,627.23
  5. Step 5: Solve for x
    x = 2,042,778,627.23/51,439.32
  6. Step 6: Final answer
    x = 39,712.40

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1.5x scale

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.