Home / 86,279.95-129,457.59-30,160.33

Finding the Fourth Proportional to 86,279.95, 129,457.59 and 30,160.33

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Solution

The fourth proportional to 86,279.95, 129,457.59 and 30,160.33 is: 45,253.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,279.95 : 129,457.59 = 30,160.33 : x
  2. Step 2: Convert to fraction form
    86,279.95/129,457.59 = 30,160.33/x
  3. Step 3: Cross multiply
    86,279.95x = 129,457.59 × 30,160.33
  4. Step 4: Simplify right side
    86,279.95x = 3,904,483,635.40
  5. Step 5: Solve for x
    x = 3,904,483,635.40/86,279.95
  6. Step 6: Final answer
    x = 45,253.66

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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.