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Finding the Fourth Proportional to 60,643.20, 90,964.80 and 54,300.90

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Solution

The fourth proportional to 60,643.20, 90,964.80 and 54,300.90 is: 81,451.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,643.20 : 90,964.80 = 54,300.90 : x
  2. Step 2: Convert to fraction form
    60,643.20/90,964.80 = 54,300.90/x
  3. Step 3: Cross multiply
    60,643.20x = 90,964.80 × 54,300.90
  4. Step 4: Simplify right side
    60,643.20x = 4,939,470,508.32
  5. Step 5: Solve for x
    x = 4,939,470,508.32/60,643.20
  6. Step 6: Final answer
    x = 81,451.35

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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.