Home / 72,252.67-99,706.35-40,420.87

Finding the Fourth Proportional to 72,252.67, 99,706.35 and 40,420.87

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Solution

The fourth proportional to 72,252.67, 99,706.35 and 40,420.87 is: 55,779.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,252.67 : 99,706.35 = 40,420.87 : x
  2. Step 2: Convert to fraction form
    72,252.67/99,706.35 = 40,420.87/x
  3. Step 3: Cross multiply
    72,252.67x = 99,706.35 × 40,420.87
  4. Step 4: Simplify right side
    72,252.67x = 4,030,217,411.52
  5. Step 5: Solve for x
    x = 4,030,217,411.52/72,252.67
  6. Step 6: Final answer
    x = 55,779.49

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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.