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Finding the Fourth Proportional to 73,857.60, 110,656.80 and 60,638.40

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Solution

The fourth proportional to 73,857.60, 110,656.80 and 60,638.40 is: 90,851.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,857.60 : 110,656.80 = 60,638.40 : x
  2. Step 2: Convert to fraction form
    73,857.60/110,656.80 = 60,638.40/x
  3. Step 3: Cross multiply
    73,857.60x = 110,656.80 × 60,638.40
  4. Step 4: Simplify right side
    73,857.60x = 6,710,051,301.12
  5. Step 5: Solve for x
    x = 6,710,051,301.12/73,857.60
  6. Step 6: Final answer
    x = 90,851.20

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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.