Home / 42,415.40-63,623.10-42,123.80

Finding the Fourth Proportional to 42,415.40, 63,623.10 and 42,123.80

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Solution

The fourth proportional to 42,415.40, 63,623.10 and 42,123.80 is: 63,185.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,415.40 : 63,623.10 = 42,123.80 : x
  2. Step 2: Convert to fraction form
    42,415.40/63,623.10 = 42,123.80/x
  3. Step 3: Cross multiply
    42,415.40x = 63,623.10 × 42,123.80
  4. Step 4: Simplify right side
    42,415.40x = 2,680,046,739.78
  5. Step 5: Solve for x
    x = 2,680,046,739.78/42,415.40
  6. Step 6: Final answer
    x = 63,185.70

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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.