Home / 86,567.40-129,818.70-30,385.80

Finding the Fourth Proportional to 86,567.40, 129,818.70 and 30,385.80

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Solution

The fourth proportional to 86,567.40, 129,818.70 and 30,385.80 is: 45,567.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,567.40 : 129,818.70 = 30,385.80 : x
  2. Step 2: Convert to fraction form
    86,567.40/129,818.70 = 30,385.80/x
  3. Step 3: Cross multiply
    86,567.40x = 129,818.70 × 30,385.80
  4. Step 4: Simplify right side
    86,567.40x = 3,944,645,054.46
  5. Step 5: Solve for x
    x = 3,944,645,054.46/86,567.40
  6. Step 6: Final answer
    x = 45,567.33

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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.