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Finding the Fourth Proportional to 45,838.80, 68,809.40 and 42,830.80

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Solution

The fourth proportional to 45,838.80, 68,809.40 and 42,830.80 is: 64,294.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,838.80 : 68,809.40 = 42,830.80 : x
  2. Step 2: Convert to fraction form
    45,838.80/68,809.40 = 42,830.80/x
  3. Step 3: Cross multiply
    45,838.80x = 68,809.40 × 42,830.80
  4. Step 4: Simplify right side
    45,838.80x = 2,947,161,649.52
  5. Step 5: Solve for x
    x = 2,947,161,649.52/45,838.80
  6. Step 6: Final answer
    x = 64,294.04

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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.