Home / 81,875,576.40-122,813,364.60-21,291,302.40

Finding the Fourth Proportional to 81,875,576.40, 122,813,364.60 and 21,291,302.40

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Solution

The fourth proportional to 81,875,576.40, 122,813,364.60 and 21,291,302.40 is: 31,936,953.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,875,576.40 : 122,813,364.60 = 21,291,302.40 : x
  2. Step 2: Convert to fraction form
    81,875,576.40/122,813,364.60 = 21,291,302.40/x
  3. Step 3: Cross multiply
    81,875,576.40x = 122,813,364.60 × 21,291,302.40
  4. Step 4: Simplify right side
    81,875,576.40x = 2,614,856,484,460,054.50
  5. Step 5: Solve for x
    x = 2,614,856,484,460,054.50/81,875,576.40
  6. Step 6: Final answer
    x = 31,936,953.60

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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.