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Finding the Fourth Proportional to 72,492.84, 100,019.61 and 47,000.25

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Solution

The fourth proportional to 72,492.84, 100,019.61 and 47,000.25 is: 64,847.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,492.84 : 100,019.61 = 47,000.25 : x
  2. Step 2: Convert to fraction form
    72,492.84/100,019.61 = 47,000.25/x
  3. Step 3: Cross multiply
    72,492.84x = 100,019.61 × 47,000.25
  4. Step 4: Simplify right side
    72,492.84x = 4,700,946,674.90
  5. Step 5: Solve for x
    x = 4,700,946,674.90/72,492.84
  6. Step 6: Final answer
    x = 64,847.05

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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.