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Finding the Fourth Proportional to 72,244.76, 99,703.02 and 40,423.91

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Solution

The fourth proportional to 72,244.76, 99,703.02 and 40,423.91 is: 55,787.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,244.76 : 99,703.02 = 40,423.91 : x
  2. Step 2: Convert to fraction form
    72,244.76/99,703.02 = 40,423.91/x
  3. Step 3: Cross multiply
    72,244.76x = 99,703.02 × 40,423.91
  4. Step 4: Simplify right side
    72,244.76x = 4,030,385,907.21
  5. Step 5: Solve for x
    x = 4,030,385,907.21/72,244.76
  6. Step 6: Final answer
    x = 55,787.93

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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.