Home / 28,119,979.80-42,179,969.70-8,952,674.40

Finding the Fourth Proportional to 28,119,979.80, 42,179,969.70 and 8,952,674.40

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Solution

The fourth proportional to 28,119,979.80, 42,179,969.70 and 8,952,674.40 is: 13,429,011.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,119,979.80 : 42,179,969.70 = 8,952,674.40 : x
  2. Step 2: Convert to fraction form
    28,119,979.80/42,179,969.70 = 8,952,674.40/x
  3. Step 3: Cross multiply
    28,119,979.80x = 42,179,969.70 × 8,952,674.40
  4. Step 4: Simplify right side
    28,119,979.80x = 377,623,534,925,965.75
  5. Step 5: Solve for x
    x = 377,623,534,925,965.75/28,119,979.80
  6. Step 6: Final answer
    x = 13,429,011.60

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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.