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Finding the Fourth Proportional to 61,000.40, 91,500.60 and 54,658.10

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Solution

The fourth proportional to 61,000.40, 91,500.60 and 54,658.10 is: 81,987.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,000.40 : 91,500.60 = 54,658.10 : x
  2. Step 2: Convert to fraction form
    61,000.40/91,500.60 = 54,658.10/x
  3. Step 3: Cross multiply
    61,000.40x = 91,500.60 × 54,658.10
  4. Step 4: Simplify right side
    61,000.40x = 5,001,248,944.86
  5. Step 5: Solve for x
    x = 5,001,248,944.86/61,000.40
  6. Step 6: Final answer
    x = 81,987.15

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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.