Home / 86,279.77-129,451.65-38,880.46

Finding the Fourth Proportional to 86,279.77, 129,451.65 and 38,880.46

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Solution

The fourth proportional to 86,279.77, 129,451.65 and 38,880.46 is: 58,335.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,279.77 : 129,451.65 = 38,880.46 : x
  2. Step 2: Convert to fraction form
    86,279.77/129,451.65 = 38,880.46/x
  3. Step 3: Cross multiply
    86,279.77x = 129,451.65 × 38,880.46
  4. Step 4: Simplify right side
    86,279.77x = 5,033,139,699.76
  5. Step 5: Solve for x
    x = 5,033,139,699.76/86,279.77
  6. Step 6: Final answer
    x = 58,335.11

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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.