Home / 72,579,200.40-108,868,800.60-66,784,525.20

Finding the Fourth Proportional to 72,579,200.40, 108,868,800.60 and 66,784,525.20

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Solution

The fourth proportional to 72,579,200.40, 108,868,800.60 and 66,784,525.20 is: 100,176,787.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,579,200.40 : 108,868,800.60 = 66,784,525.20 : x
  2. Step 2: Convert to fraction form
    72,579,200.40/108,868,800.60 = 66,784,525.20/x
  3. Step 3: Cross multiply
    72,579,200.40x = 108,868,800.60 × 66,784,525.20
  4. Step 4: Simplify right side
    72,579,200.40x = 7,270,751,157,164,475
  5. Step 5: Solve for x
    x = 7,270,751,157,164,475/72,579,200.40
  6. Step 6: Final answer
    x = 100,176,787.80

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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.