Home / 81,688,126.60-122,364,228.30-56,157,963.40

Finding the Fourth Proportional to 81,688,126.60, 122,364,228.30 and 56,157,963.40

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Solution

The fourth proportional to 81,688,126.60, 122,364,228.30 and 56,157,963.40 is: 84,121,476.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,688,126.60 : 122,364,228.30 = 56,157,963.40 : x
  2. Step 2: Convert to fraction form
    81,688,126.60/122,364,228.30 = 56,157,963.40/x
  3. Step 3: Cross multiply
    81,688,126.60x = 122,364,228.30 × 56,157,963.40
  4. Step 4: Simplify right side
    81,688,126.60x = 6,871,725,854,340,644
  5. Step 5: Solve for x
    x = 6,871,725,854,340,644/81,688,126.60
  6. Step 6: Final answer
    x = 84,121,476.89

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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.