Home / 85,373,957.80-128,041,770.30-39,271,549.48

Finding the Fourth Proportional to 85,373,957.80, 128,041,770.30 and 39,271,549.48

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Solution

The fourth proportional to 85,373,957.80, 128,041,770.30 and 39,271,549.48 is: 58,898,507.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,373,957.80 : 128,041,770.30 = 39,271,549.48 : x
  2. Step 2: Convert to fraction form
    85,373,957.80/128,041,770.30 = 39,271,549.48/x
  3. Step 3: Cross multiply
    85,373,957.80x = 128,041,770.30 × 39,271,549.48
  4. Step 4: Simplify right side
    85,373,957.80x = 5,028,398,717,843,244
  5. Step 5: Solve for x
    x = 5,028,398,717,843,244/85,373,957.80
  6. Step 6: Final answer
    x = 58,898,507.78

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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.