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Finding the Fourth Proportional to 60,341.32, 90,479.10 and 20,895.16

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Solution

The fourth proportional to 60,341.32, 90,479.10 and 20,895.16 is: 31,331.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,341.32 : 90,479.10 = 20,895.16 : x
  2. Step 2: Convert to fraction form
    60,341.32/90,479.10 = 20,895.16/x
  3. Step 3: Cross multiply
    60,341.32x = 90,479.10 × 20,895.16
  4. Step 4: Simplify right side
    60,341.32x = 1,890,575,271.16
  5. Step 5: Solve for x
    x = 1,890,575,271.16/60,341.32
  6. Step 6: Final answer
    x = 31,331.35

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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.