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Finding the Fourth Proportional to 86,977.70, 130,478.70 and 37,057.40

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Solution

The fourth proportional to 86,977.70, 130,478.70 and 37,057.40 is: 55,591.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,977.70 : 130,478.70 = 37,057.40 : x
  2. Step 2: Convert to fraction form
    86,977.70/130,478.70 = 37,057.40/x
  3. Step 3: Cross multiply
    86,977.70x = 130,478.70 × 37,057.40
  4. Step 4: Simplify right side
    86,977.70x = 4,835,201,377.38
  5. Step 5: Solve for x
    x = 4,835,201,377.38/86,977.70
  6. Step 6: Final answer
    x = 55,591.28

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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.