Home / 86,990.06-130,275.70-49,458.30

Finding the Fourth Proportional to 86,990.06, 130,275.70 and 49,458.30

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Solution

The fourth proportional to 86,990.06, 130,275.70 and 49,458.30 is: 74,068.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,990.06 : 130,275.70 = 49,458.30 : x
  2. Step 2: Convert to fraction form
    86,990.06/130,275.70 = 49,458.30/x
  3. Step 3: Cross multiply
    86,990.06x = 130,275.70 × 49,458.30
  4. Step 4: Simplify right side
    86,990.06x = 6,443,214,653.31
  5. Step 5: Solve for x
    x = 6,443,214,653.31/86,990.06
  6. Step 6: Final answer
    x = 74,068.40

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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.