Home / 65,430,042.52-90,281,022.78-39,315,031.78

Finding the Fourth Proportional to 65,430,042.52, 90,281,022.78 and 39,315,031.78

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Solution

The fourth proportional to 65,430,042.52, 90,281,022.78 and 39,315,031.78 is: 54,247,271.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,430,042.52 : 90,281,022.78 = 39,315,031.78 : x
  2. Step 2: Convert to fraction form
    65,430,042.52/90,281,022.78 = 39,315,031.78/x
  3. Step 3: Cross multiply
    65,430,042.52x = 90,281,022.78 × 39,315,031.78
  4. Step 4: Simplify right side
    65,430,042.52x = 3,549,401,279,726,604
  5. Step 5: Solve for x
    x = 3,549,401,279,726,604/65,430,042.52
  6. Step 6: Final answer
    x = 54,247,271.48

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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.