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Finding the Fourth Proportional to 68,688.40, 103,032.60 and 42,444.40

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Solution

The fourth proportional to 68,688.40, 103,032.60 and 42,444.40 is: 63,666.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,688.40 : 103,032.60 = 42,444.40 : x
  2. Step 2: Convert to fraction form
    68,688.40/103,032.60 = 42,444.40/x
  3. Step 3: Cross multiply
    68,688.40x = 103,032.60 × 42,444.40
  4. Step 4: Simplify right side
    68,688.40x = 4,373,156,887.44
  5. Step 5: Solve for x
    x = 4,373,156,887.44/68,688.40
  6. Step 6: Final answer
    x = 63,666.60

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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.