Home / 81,006,285.18-121,516,810.72-26,404,855.86

Finding the Fourth Proportional to 81,006,285.18, 121,516,810.72 and 26,404,855.86

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Solution

The fourth proportional to 81,006,285.18, 121,516,810.72 and 26,404,855.86 is: 39,609,690.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,006,285.18 : 121,516,810.72 = 26,404,855.86 : x
  2. Step 2: Convert to fraction form
    81,006,285.18/121,516,810.72 = 26,404,855.86/x
  3. Step 3: Cross multiply
    81,006,285.18x = 121,516,810.72 × 26,404,855.86
  4. Step 4: Simplify right side
    81,006,285.18x = 3,208,633,871,628,502.50
  5. Step 5: Solve for x
    x = 3,208,633,871,628,502.50/81,006,285.18
  6. Step 6: Final answer
    x = 39,609,690.34

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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.