Home / 81,688,125.60-122,364,226.80-56,157,962.40

Finding the Fourth Proportional to 81,688,125.60, 122,364,226.80 and 56,157,962.40

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Solution

The fourth proportional to 81,688,125.60, 122,364,226.80 and 56,157,962.40 is: 84,121,475.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,688,125.60 : 122,364,226.80 = 56,157,962.40 : x
  2. Step 2: Convert to fraction form
    81,688,125.60/122,364,226.80 = 56,157,962.40/x
  3. Step 3: Cross multiply
    81,688,125.60x = 122,364,226.80 × 56,157,962.40
  4. Step 4: Simplify right side
    81,688,125.60x = 6,871,725,647,739,472
  5. Step 5: Solve for x
    x = 6,871,725,647,739,472/81,688,125.60
  6. Step 6: Final answer
    x = 84,121,475.40

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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.