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Finding the Fourth Proportional to 60,803.40, 91,205.10 and 39,808.20

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Solution

The fourth proportional to 60,803.40, 91,205.10 and 39,808.20 is: 59,712.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,803.40 : 91,205.10 = 39,808.20 : x
  2. Step 2: Convert to fraction form
    60,803.40/91,205.10 = 39,808.20/x
  3. Step 3: Cross multiply
    60,803.40x = 91,205.10 × 39,808.20
  4. Step 4: Simplify right side
    60,803.40x = 3,630,710,861.82
  5. Step 5: Solve for x
    x = 3,630,710,861.82/60,803.40
  6. Step 6: Final answer
    x = 59,712.30

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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.