Home / 70,143.04-105,234-39,000.16

Finding the Fourth Proportional to 70,143.04, 105,234 and 39,000.16

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Solution

The fourth proportional to 70,143.04, 105,234 and 39,000.16 is: 58,511.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,143.04 : 105,234 = 39,000.16 : x
  2. Step 2: Convert to fraction form
    70,143.04/105,234 = 39,000.16/x
  3. Step 3: Cross multiply
    70,143.04x = 105,234 × 39,000.16
  4. Step 4: Simplify right side
    70,143.04x = 4,104,142,837.44
  5. Step 5: Solve for x
    x = 4,104,142,837.44/70,143.04
  6. Step 6: Final answer
    x = 58,511.05

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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.