Home / 78,282,331.70-117,422,749.85-47,585,386.47

Finding the Fourth Proportional to 78,282,331.70, 117,422,749.85 and 47,585,386.47

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Solution

The fourth proportional to 78,282,331.70, 117,422,749.85 and 47,585,386.47 is: 71,377,625.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,282,331.70 : 117,422,749.85 = 47,585,386.47 : x
  2. Step 2: Convert to fraction form
    78,282,331.70/117,422,749.85 = 47,585,386.47/x
  3. Step 3: Cross multiply
    78,282,331.70x = 117,422,749.85 × 47,585,386.47
  4. Step 4: Simplify right side
    78,282,331.70x = 5,587,606,931,595,242
  5. Step 5: Solve for x
    x = 5,587,606,931,595,242/78,282,331.70
  6. Step 6: Final answer
    x = 71,377,625.20

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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.