Home / 74,007.80-111,011.70-42,385.40

Finding the Fourth Proportional to 74,007.80, 111,011.70 and 42,385.40

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Solution

The fourth proportional to 74,007.80, 111,011.70 and 42,385.40 is: 63,578.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,007.80 : 111,011.70 = 42,385.40 : x
  2. Step 2: Convert to fraction form
    74,007.80/111,011.70 = 42,385.40/x
  3. Step 3: Cross multiply
    74,007.80x = 111,011.70 × 42,385.40
  4. Step 4: Simplify right side
    74,007.80x = 4,705,275,309.18
  5. Step 5: Solve for x
    x = 4,705,275,309.18/74,007.80
  6. Step 6: Final answer
    x = 63,578.10

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1.5x scale

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.