Home / 78,282,331.29-117,422,749.25-47,585,386.05

Finding the Fourth Proportional to 78,282,331.29, 117,422,749.25 and 47,585,386.05

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Solution

The fourth proportional to 78,282,331.29, 117,422,749.25 and 47,585,386.05 is: 71,377,624.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,282,331.29 : 117,422,749.25 = 47,585,386.05 : x
  2. Step 2: Convert to fraction form
    78,282,331.29/117,422,749.25 = 47,585,386.05/x
  3. Step 3: Cross multiply
    78,282,331.29x = 117,422,749.25 × 47,585,386.05
  4. Step 4: Simplify right side
    78,282,331.29x = 5,587,606,853,875,671
  5. Step 5: Solve for x
    x = 5,587,606,853,875,671/78,282,331.29
  6. Step 6: Final answer
    x = 71,377,624.58

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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.