Home / 78,948,649.60-118,449,859.92-42,560,556.28

Finding the Fourth Proportional to 78,948,649.60, 118,449,859.92 and 42,560,556.28

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Solution

The fourth proportional to 78,948,649.60, 118,449,859.92 and 42,560,556.28 is: 63,855,328.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,948,649.60 : 118,449,859.92 = 42,560,556.28 : x
  2. Step 2: Convert to fraction form
    78,948,649.60/118,449,859.92 = 42,560,556.28/x
  3. Step 3: Cross multiply
    78,948,649.60x = 118,449,859.92 × 42,560,556.28
  4. Step 4: Simplify right side
    78,948,649.60x = 5,041,291,929,483,277
  5. Step 5: Solve for x
    x = 5,041,291,929,483,277/78,948,649.60
  6. Step 6: Final answer
    x = 63,855,328.18

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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.