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Finding the Fourth Proportional to 88,715.50, 122,415.78 and 52,909.72

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Solution

The fourth proportional to 88,715.50, 122,415.78 and 52,909.72 is: 73,008.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,715.50 : 122,415.78 = 52,909.72 : x
  2. Step 2: Convert to fraction form
    88,715.50/122,415.78 = 52,909.72/x
  3. Step 3: Cross multiply
    88,715.50x = 122,415.78 × 52,909.72
  4. Step 4: Simplify right side
    88,715.50x = 6,476,984,643.38
  5. Step 5: Solve for x
    x = 6,476,984,643.38/88,715.50
  6. Step 6: Final answer
    x = 73,008.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.