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Finding the Fourth Proportional to 68,737.04, 103,130.08 and 42,411.12

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Solution

The fourth proportional to 68,737.04, 103,130.08 and 42,411.12 is: 63,631.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,737.04 : 103,130.08 = 42,411.12 : x
  2. Step 2: Convert to fraction form
    68,737.04/103,130.08 = 42,411.12/x
  3. Step 3: Cross multiply
    68,737.04x = 103,130.08 × 42,411.12
  4. Step 4: Simplify right side
    68,737.04x = 4,373,862,198.49
  5. Step 5: Solve for x
    x = 4,373,862,198.49/68,737.04
  6. Step 6: Final answer
    x = 63,631.81

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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.