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Finding the Fourth Proportional to 86,932.80, 130,366.80 and 34,331.40

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Solution

The fourth proportional to 86,932.80, 130,366.80 and 34,331.40 is: 51,484.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,932.80 : 130,366.80 = 34,331.40 : x
  2. Step 2: Convert to fraction form
    86,932.80/130,366.80 = 34,331.40/x
  3. Step 3: Cross multiply
    86,932.80x = 130,366.80 × 34,331.40
  4. Step 4: Simplify right side
    86,932.80x = 4,475,674,757.52
  5. Step 5: Solve for x
    x = 4,475,674,757.52/86,932.80
  6. Step 6: Final answer
    x = 51,484.30

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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.