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Finding the Fourth Proportional to 66,432.86, 99,649.29 and 26,989.99

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Solution

The fourth proportional to 66,432.86, 99,649.29 and 26,989.99 is: 40,484.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,432.86 : 99,649.29 = 26,989.99 : x
  2. Step 2: Convert to fraction form
    66,432.86/99,649.29 = 26,989.99/x
  3. Step 3: Cross multiply
    66,432.86x = 99,649.29 × 26,989.99
  4. Step 4: Simplify right side
    66,432.86x = 2,689,533,192.70
  5. Step 5: Solve for x
    x = 2,689,533,192.70/66,432.86
  6. Step 6: Final answer
    x = 40,484.98

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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.