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Finding the Fourth Proportional to 72,059.19, 99,437.52 and 40,230.10

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Solution

The fourth proportional to 72,059.19, 99,437.52 and 40,230.10 is: 55,515.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,059.19 : 99,437.52 = 40,230.10 : x
  2. Step 2: Convert to fraction form
    72,059.19/99,437.52 = 40,230.10/x
  3. Step 3: Cross multiply
    72,059.19x = 99,437.52 × 40,230.10
  4. Step 4: Simplify right side
    72,059.19x = 4,000,381,373.35
  5. Step 5: Solve for x
    x = 4,000,381,373.35/72,059.19
  6. Step 6: Final answer
    x = 55,515.21

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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.