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Finding the Fourth Proportional to 62,345.64, 85,989.36 and 39,688.32

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Solution

The fourth proportional to 62,345.64, 85,989.36 and 39,688.32 is: 54,739.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,345.64 : 85,989.36 = 39,688.32 : x
  2. Step 2: Convert to fraction form
    62,345.64/85,989.36 = 39,688.32/x
  3. Step 3: Cross multiply
    62,345.64x = 85,989.36 × 39,688.32
  4. Step 4: Simplify right side
    62,345.64x = 3,412,773,236.28
  5. Step 5: Solve for x
    x = 3,412,773,236.28/62,345.64
  6. Step 6: Final answer
    x = 54,739.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.