Home / 51,430.63-70,980.16-28,775.36

Finding the Fourth Proportional to 51,430.63, 70,980.16 and 28,775.36

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Solution

The fourth proportional to 51,430.63, 70,980.16 and 28,775.36 is: 39,713.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,430.63 : 70,980.16 = 28,775.36 : x
  2. Step 2: Convert to fraction form
    51,430.63/70,980.16 = 28,775.36/x
  3. Step 3: Cross multiply
    51,430.63x = 70,980.16 × 28,775.36
  4. Step 4: Simplify right side
    51,430.63x = 2,042,479,656.86
  5. Step 5: Solve for x
    x = 2,042,479,656.86/51,430.63
  6. Step 6: Final answer
    x = 39,713.29

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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.