Home / 86,071.66-129,128.26-29,903.60

Finding the Fourth Proportional to 86,071.66, 129,128.26 and 29,903.60

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Solution

The fourth proportional to 86,071.66, 129,128.26 and 29,903.60 is: 44,862.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,071.66 : 129,128.26 = 29,903.60 : x
  2. Step 2: Convert to fraction form
    86,071.66/129,128.26 = 29,903.60/x
  3. Step 3: Cross multiply
    86,071.66x = 129,128.26 × 29,903.60
  4. Step 4: Simplify right side
    86,071.66x = 3,861,399,835.74
  5. Step 5: Solve for x
    x = 3,861,399,835.74/86,071.66
  6. Step 6: Final answer
    x = 44,862.62

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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.