Home / 86,822.40-130,276.80-49,411.20

Finding the Fourth Proportional to 86,822.40, 130,276.80 and 49,411.20

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Solution

The fourth proportional to 86,822.40, 130,276.80 and 49,411.20 is: 74,141.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,822.40 : 130,276.80 = 49,411.20 : x
  2. Step 2: Convert to fraction form
    86,822.40/130,276.80 = 49,411.20/x
  3. Step 3: Cross multiply
    86,822.40x = 130,276.80 × 49,411.20
  4. Step 4: Simplify right side
    86,822.40x = 6,437,133,020.16
  5. Step 5: Solve for x
    x = 6,437,133,020.16/86,822.40
  6. Step 6: Final answer
    x = 74,141.39

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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.