Home / 86,935.70-130,403.55-47,471.28

Finding the Fourth Proportional to 86,935.70, 130,403.55 and 47,471.28

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Solution

The fourth proportional to 86,935.70, 130,403.55 and 47,471.28 is: 71,206.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,935.70 : 130,403.55 = 47,471.28 : x
  2. Step 2: Convert to fraction form
    86,935.70/130,403.55 = 47,471.28/x
  3. Step 3: Cross multiply
    86,935.70x = 130,403.55 × 47,471.28
  4. Step 4: Simplify right side
    86,935.70x = 6,190,423,435.04
  5. Step 5: Solve for x
    x = 6,190,423,435.04/86,935.70
  6. Step 6: Final answer
    x = 71,206.92

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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.