Home / 66,402,005.40-99,603,008.10-54,285,150.60

Finding the Fourth Proportional to 66,402,005.40, 99,603,008.10 and 54,285,150.60

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Solution

The fourth proportional to 66,402,005.40, 99,603,008.10 and 54,285,150.60 is: 81,427,725.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,402,005.40 : 99,603,008.10 = 54,285,150.60 : x
  2. Step 2: Convert to fraction form
    66,402,005.40/99,603,008.10 = 54,285,150.60/x
  3. Step 3: Cross multiply
    66,402,005.40x = 99,603,008.10 × 54,285,150.60
  4. Step 4: Simplify right side
    66,402,005.40x = 5,406,964,294,921,520
  5. Step 5: Solve for x
    x = 5,406,964,294,921,520/66,402,005.40
  6. Step 6: Final answer
    x = 81,427,725.90

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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.