Home / 86,430.25-129,645.38-28,062.25

Finding the Fourth Proportional to 86,430.25, 129,645.38 and 28,062.25

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Solution

The fourth proportional to 86,430.25, 129,645.38 and 28,062.25 is: 42,093.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,430.25 : 129,645.38 = 28,062.25 : x
  2. Step 2: Convert to fraction form
    86,430.25/129,645.38 = 28,062.25/x
  3. Step 3: Cross multiply
    86,430.25x = 129,645.38 × 28,062.25
  4. Step 4: Simplify right side
    86,430.25x = 3,638,140,924.59
  5. Step 5: Solve for x
    x = 3,638,140,924.59/86,430.25
  6. Step 6: Final answer
    x = 42,093.38

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1.5x scale

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.