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Finding the Fourth Proportional to 60,235.40, 90,353.10 and 39,240.20

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Solution

The fourth proportional to 60,235.40, 90,353.10 and 39,240.20 is: 58,860.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,235.40 : 90,353.10 = 39,240.20 : x
  2. Step 2: Convert to fraction form
    60,235.40/90,353.10 = 39,240.20/x
  3. Step 3: Cross multiply
    60,235.40x = 90,353.10 × 39,240.20
  4. Step 4: Simplify right side
    60,235.40x = 3,545,473,714.62
  5. Step 5: Solve for x
    x = 3,545,473,714.62/60,235.40
  6. Step 6: Final answer
    x = 58,860.30

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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.