Home / 43,139.20-64,708.80-34,326.40

Finding the Fourth Proportional to 43,139.20, 64,708.80 and 34,326.40

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Solution

The fourth proportional to 43,139.20, 64,708.80 and 34,326.40 is: 51,489.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,139.20 : 64,708.80 = 34,326.40 : x
  2. Step 2: Convert to fraction form
    43,139.20/64,708.80 = 34,326.40/x
  3. Step 3: Cross multiply
    43,139.20x = 64,708.80 × 34,326.40
  4. Step 4: Simplify right side
    43,139.20x = 2,221,220,152.32
  5. Step 5: Solve for x
    x = 2,221,220,152.32/43,139.20
  6. Step 6: Final answer
    x = 51,489.60

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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.