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Finding the Fourth Proportional to 66,312.75, 99,487.35 and 19,565.63

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Solution

The fourth proportional to 66,312.75, 99,487.35 and 19,565.63 is: 29,353.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,312.75 : 99,487.35 = 19,565.63 : x
  2. Step 2: Convert to fraction form
    66,312.75/99,487.35 = 19,565.63/x
  3. Step 3: Cross multiply
    66,312.75x = 99,487.35 × 19,565.63
  4. Step 4: Simplify right side
    66,312.75x = 1,946,532,182.34
  5. Step 5: Solve for x
    x = 1,946,532,182.34/66,312.75
  6. Step 6: Final answer
    x = 29,353.81

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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.