Home / 85,317,077.74-128,012,484.47-45,879,236.11

Finding the Fourth Proportional to 85,317,077.74, 128,012,484.47 and 45,879,236.11

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Solution

The fourth proportional to 85,317,077.74, 128,012,484.47 and 45,879,236.11 is: 68,838,679.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,317,077.74 : 128,012,484.47 = 45,879,236.11 : x
  2. Step 2: Convert to fraction form
    85,317,077.74/128,012,484.47 = 45,879,236.11/x
  3. Step 3: Cross multiply
    85,317,077.74x = 128,012,484.47 × 45,879,236.11
  4. Step 4: Simplify right side
    85,317,077.74x = 5,873,115,000,026,838
  5. Step 5: Solve for x
    x = 5,873,115,000,026,838/85,317,077.74
  6. Step 6: Final answer
    x = 68,838,679.85

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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.