Home / 30,109,103.80-45,163,655.70-9,911,721.40

Finding the Fourth Proportional to 30,109,103.80, 45,163,655.70 and 9,911,721.40

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Solution

The fourth proportional to 30,109,103.80, 45,163,655.70 and 9,911,721.40 is: 14,867,582.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,109,103.80 : 45,163,655.70 = 9,911,721.40 : x
  2. Step 2: Convert to fraction form
    30,109,103.80/45,163,655.70 = 9,911,721.40/x
  3. Step 3: Cross multiply
    30,109,103.80x = 45,163,655.70 × 9,911,721.40
  4. Step 4: Simplify right side
    30,109,103.80x = 447,649,572,703,922
  5. Step 5: Solve for x
    x = 447,649,572,703,922/30,109,103.80
  6. Step 6: Final answer
    x = 14,867,582.10

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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.