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Finding the Fourth Proportional to 78,445.58, 108,240.81 and 46,622.30

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Solution

The fourth proportional to 78,445.58, 108,240.81 and 46,622.30 is: 64,330.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,445.58 : 108,240.81 = 46,622.30 : x
  2. Step 2: Convert to fraction form
    78,445.58/108,240.81 = 46,622.30/x
  3. Step 3: Cross multiply
    78,445.58x = 108,240.81 × 46,622.30
  4. Step 4: Simplify right side
    78,445.58x = 5,046,435,516.06
  5. Step 5: Solve for x
    x = 5,046,435,516.06/78,445.58
  6. Step 6: Final answer
    x = 64,330.40

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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.