Home / 81,688,129.60-122,364,232.80-56,157,966.40

Finding the Fourth Proportional to 81,688,129.60, 122,364,232.80 and 56,157,966.40

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Solution

The fourth proportional to 81,688,129.60, 122,364,232.80 and 56,157,966.40 is: 84,121,481.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,688,129.60 : 122,364,232.80 = 56,157,966.40 : x
  2. Step 2: Convert to fraction form
    81,688,129.60/122,364,232.80 = 56,157,966.40/x
  3. Step 3: Cross multiply
    81,688,129.60x = 122,364,232.80 × 56,157,966.40
  4. Step 4: Simplify right side
    81,688,129.60x = 6,871,726,474,144,178
  5. Step 5: Solve for x
    x = 6,871,726,474,144,178/81,688,129.60
  6. Step 6: Final answer
    x = 84,121,481.39

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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.