Home / 86,555.20-129,905.70-34,002.40

Finding the Fourth Proportional to 86,555.20, 129,905.70 and 34,002.40

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Solution

The fourth proportional to 86,555.20, 129,905.70 and 34,002.40 is: 51,032.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,555.20 : 129,905.70 = 34,002.40 : x
  2. Step 2: Convert to fraction form
    86,555.20/129,905.70 = 34,002.40/x
  3. Step 3: Cross multiply
    86,555.20x = 129,905.70 × 34,002.40
  4. Step 4: Simplify right side
    86,555.20x = 4,417,105,573.68
  5. Step 5: Solve for x
    x = 4,417,105,573.68/86,555.20
  6. Step 6: Final answer
    x = 51,032.24

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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.