Home / 72,146,193.12-99,559,079.21-39,105,732.86

Finding the Fourth Proportional to 72,146,193.12, 99,559,079.21 and 39,105,732.86

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Solution

The fourth proportional to 72,146,193.12, 99,559,079.21 and 39,105,732.86 is: 53,964,465.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,146,193.12 : 99,559,079.21 = 39,105,732.86 : x
  2. Step 2: Convert to fraction form
    72,146,193.12/99,559,079.21 = 39,105,732.86/x
  3. Step 3: Cross multiply
    72,146,193.12x = 99,559,079.21 × 39,105,732.86
  4. Step 4: Simplify right side
    72,146,193.12x = 3,893,330,755,687,205.50
  5. Step 5: Solve for x
    x = 3,893,330,755,687,205.50/72,146,193.12
  6. Step 6: Final answer
    x = 53,964,465.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.