Home / 72,520.04-108,779.91-40,915.76

Finding the Fourth Proportional to 72,520.04, 108,779.91 and 40,915.76

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Solution

The fourth proportional to 72,520.04, 108,779.91 and 40,915.76 is: 61,373.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,520.04 : 108,779.91 = 40,915.76 : x
  2. Step 2: Convert to fraction form
    72,520.04/108,779.91 = 40,915.76/x
  3. Step 3: Cross multiply
    72,520.04x = 108,779.91 × 40,915.76
  4. Step 4: Simplify right side
    72,520.04x = 4,450,812,146.48
  5. Step 5: Solve for x
    x = 4,450,812,146.48/72,520.04
  6. Step 6: Final answer
    x = 61,373.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.