Home / 28,331,720.80-42,497,581.20-9,164,415.40

Finding the Fourth Proportional to 28,331,720.80, 42,497,581.20 and 9,164,415.40

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Solution

The fourth proportional to 28,331,720.80, 42,497,581.20 and 9,164,415.40 is: 13,746,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,331,720.80 : 42,497,581.20 = 9,164,415.40 : x
  2. Step 2: Convert to fraction form
    28,331,720.80/42,497,581.20 = 9,164,415.40/x
  3. Step 3: Cross multiply
    28,331,720.80x = 42,497,581.20 × 9,164,415.40
  4. Step 4: Simplify right side
    28,331,720.80x = 389,465,487,612,030.50
  5. Step 5: Solve for x
    x = 389,465,487,612,030.50/28,331,720.80
  6. Step 6: Final answer
    x = 13,746,623.10

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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.