Home / 86,214.02-129,335.61-39,470.54

Finding the Fourth Proportional to 86,214.02, 129,335.61 and 39,470.54

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Solution

The fourth proportional to 86,214.02, 129,335.61 and 39,470.54 is: 59,212.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,214.02 : 129,335.61 = 39,470.54 : x
  2. Step 2: Convert to fraction form
    86,214.02/129,335.61 = 39,470.54/x
  3. Step 3: Cross multiply
    86,214.02x = 129,335.61 × 39,470.54
  4. Step 4: Simplify right side
    86,214.02x = 5,104,946,367.93
  5. Step 5: Solve for x
    x = 5,104,946,367.93/86,214.02
  6. Step 6: Final answer
    x = 59,212.49

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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.