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Finding the Fourth Proportional to 49,363.80, 74,045.70 and 42,000.90

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Solution

The fourth proportional to 49,363.80, 74,045.70 and 42,000.90 is: 63,001.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,363.80 : 74,045.70 = 42,000.90 : x
  2. Step 2: Convert to fraction form
    49,363.80/74,045.70 = 42,000.90/x
  3. Step 3: Cross multiply
    49,363.80x = 74,045.70 × 42,000.90
  4. Step 4: Simplify right side
    49,363.80x = 3,109,986,041.13
  5. Step 5: Solve for x
    x = 3,109,986,041.13/49,363.80
  6. Step 6: Final answer
    x = 63,001.35

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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.