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Finding the Fourth Proportional to 72,638.60, 108,666.30 and 62,886.20

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Solution

The fourth proportional to 72,638.60, 108,666.30 and 62,886.20 is: 94,076.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,638.60 : 108,666.30 = 62,886.20 : x
  2. Step 2: Convert to fraction form
    72,638.60/108,666.30 = 62,886.20/x
  3. Step 3: Cross multiply
    72,638.60x = 108,666.30 × 62,886.20
  4. Step 4: Simplify right side
    72,638.60x = 6,833,610,675.06
  5. Step 5: Solve for x
    x = 6,833,610,675.06/72,638.60
  6. Step 6: Final answer
    x = 94,076.85

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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.