Home / 86,346.25-129,513.43-53,071.45

Finding the Fourth Proportional to 86,346.25, 129,513.43 and 53,071.45

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Solution

The fourth proportional to 86,346.25, 129,513.43 and 53,071.45 is: 79,603.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,346.25 : 129,513.43 = 53,071.45 : x
  2. Step 2: Convert to fraction form
    86,346.25/129,513.43 = 53,071.45/x
  3. Step 3: Cross multiply
    86,346.25x = 129,513.43 × 53,071.45
  4. Step 4: Simplify right side
    86,346.25x = 6,873,465,524.57
  5. Step 5: Solve for x
    x = 6,873,465,524.57/86,346.25
  6. Step 6: Final answer
    x = 79,603.52

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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.