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Finding the Fourth Proportional to 60,697.20, 91,045.80 and 60,308.40

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Solution

The fourth proportional to 60,697.20, 91,045.80 and 60,308.40 is: 90,462.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,697.20 : 91,045.80 = 60,308.40 : x
  2. Step 2: Convert to fraction form
    60,697.20/91,045.80 = 60,308.40/x
  3. Step 3: Cross multiply
    60,697.20x = 91,045.80 × 60,308.40
  4. Step 4: Simplify right side
    60,697.20x = 5,490,826,524.72
  5. Step 5: Solve for x
    x = 5,490,826,524.72/60,697.20
  6. Step 6: Final answer
    x = 90,462.60

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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.