Home / 51,312.13-70,810-28,651.48

Finding the Fourth Proportional to 51,312.13, 70,810 and 28,651.48

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Solution

The fourth proportional to 51,312.13, 70,810 and 28,651.48 is: 39,538.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,312.13 : 70,810 = 28,651.48 : x
  2. Step 2: Convert to fraction form
    51,312.13/70,810 = 28,651.48/x
  3. Step 3: Cross multiply
    51,312.13x = 70,810 × 28,651.48
  4. Step 4: Simplify right side
    51,312.13x = 2,028,810,944.75
  5. Step 5: Solve for x
    x = 2,028,810,944.75/51,312.13
  6. Step 6: Final answer
    x = 39,538.63

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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.