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Finding the Fourth Proportional to 60,362.08, 90,543.12 and 20,919.18

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Solution

The fourth proportional to 60,362.08, 90,543.12 and 20,919.18 is: 31,378.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,362.08 : 90,543.12 = 20,919.18 : x
  2. Step 2: Convert to fraction form
    60,362.08/90,543.12 = 20,919.18/x
  3. Step 3: Cross multiply
    60,362.08x = 90,543.12 × 20,919.18
  4. Step 4: Simplify right side
    60,362.08x = 1,894,087,825.04
  5. Step 5: Solve for x
    x = 1,894,087,825.04/60,362.08
  6. Step 6: Final answer
    x = 31,378.77

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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.