Home / 86,731.80-130,008.24-42,303.66

Finding the Fourth Proportional to 86,731.80, 130,008.24 and 42,303.66

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Solution

The fourth proportional to 86,731.80, 130,008.24 and 42,303.66 is: 63,411.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,731.80 : 130,008.24 = 42,303.66 : x
  2. Step 2: Convert to fraction form
    86,731.80/130,008.24 = 42,303.66/x
  3. Step 3: Cross multiply
    86,731.80x = 130,008.24 × 42,303.66
  4. Step 4: Simplify right side
    86,731.80x = 5,499,824,382.16
  5. Step 5: Solve for x
    x = 5,499,824,382.16/86,731.80
  6. Step 6: Final answer
    x = 63,411.86

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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.